中考英语：情态动词强化练习100题

这是一份中考英语：情态动词强化练习100题，共19页。
情态动词强化练习100题
第一部分:1-50 专项练习 第二部分:51-100名师解题

1．— What's the matter with Tom? He has been absent for two days.
— Oh! He be ill. Let's go and ask Ms Brown.
A．can B．need C．may D．would
2．—Who is the girl stanging over there?
—Well,if you_______ know,her name is Kate.
A．may B．can C．must D．need
3．You ______ be serious! You're actually going to lend him money again？.
A．needn't B．can't C．shouldn't D．mustn't
4．—What is your mother going to do this Saturday?
—I'm not sure. She ______ go to see my grandmother.
A．can B．may C．must D．should
5．——No one_______ be compared with Messi in playing football.
——Oh, you are really his big fan.
A．might B．could C．must D．can
6．You be hungry after the long walk. Help yourself to some cakes.
A．should B．must C．need to D．ought to
7．——Must I answer it in English?
——No, you _______. You can use Chinese.
A．shouldn't B．can't C．mustn't D．needn't
8．—Let's go to watch the cosplay show!
—Sorry, I . I have to go to my guitar lesson.
A．shouldn't B．mustn't C．needn't D．can't
9．—Is Kate coming to the party this evening?
—No, she _________ be at the party. She_______ to the UK.
A．mustn't; has gone B．mustn't; has been
C．can't; has gone D．can't; has been
10．— Shall I book some seats for the concert?
—______. I've done that.
A．Yes, you may B．No, you mustn't
C．No, you needn't D．No, you can't
11．- Who has done that again?
-_______ you ask? Little Tom, of course！
A．Must B．Can C．Would D．Need
12．—Must I pay for the bill now, boss?
—No, you __________ pay for it after the meal.
A．needn't B．can't C．may D．should
13．_______ you leave now?
—— Yes, because I'm meeting my aunt at 7:00 this evening.
A．Can B．May C．Need D．Must
14．You ___________ finish the report today. Any time before this weekend is OK.
A．mustn't B．needn't C．must D．need
15．—I don't want to go to school on foot. What should I do?
—You try asking your father for a bike, or you can go by bus.
A．have to B．must C．might D．can't
16．—Must I finish the homework tonight?
—No, you .You can finish it tomorrow.
A．mustn't B．needn't C．need D．must
17．— Whose is this blue bike?
—It ________ be Mary's. Her bike is black and white.
A．must B．can't C．can D．mustn't
18．——Our class won the English speaking contest.
——Congratulations! You________ be very proud of it.
A．can B．would C．must
19．—Can you ride a horse, Mike?
—No, I ______.
A．can't B．may not C．mustn't D．needn't
20．— ______ I have some more cake?
— No, I'm afraid you can't.
A．Must B．Can C．Should D．Need
21．Students ought _____ the truth.
A．to tell B．tell C．telling D．told
22．— I'm thinking of losing weight these days.
— Oh, you _______ be mad. You're only 45 kilograms at the most.
A．can B．must C．should D．need
23．——Be quiet! Mr Smith is coming.
——Don't worry. It__________be him. Mr Smith is much taller.
A．mustn't B．must C．can't D．needn't
24．It is usually warm in Nanjing in spring. But sometimes it be very cold.
A．must B．would C．can D．should
25．Just like weather, life ______ be beautiful all the time.
A．mustn't B．needn't C．can't D．wouldn't
26．– May I smoke here?
– No, you ______.
A．can't B．mustn't C．may not
27．—Could I invite my friends to my birthday party?
—Sorry, you ______.
A．can B．can't C．could D．couldn't
28．—–I think the man over there must be Tom.
—–It _____ be him. He has ______ to America.
A．can't；gone B．can't；been C．may not；been D．mustn't；gone
29．Would you mind________the door? It's so windy and I feel so cold.
A．closing B．opening C．to close D．to open
30．The lady in this photo be over fifty! She looks so young!
A．mustn't B．can't C．must D．can
31．——It's Sunday today, so you get up so early.
——Yes, I can have a good rest.
A．don't need B．don't have C．haven't D．needn't
32．——Must I send my uncle an e-mail now, Dad?
——No, you ____.You____ do that after you finish your homework.
A．couldn't; may B．can't; can C．needn't; can D．may not; must
33．— What do you want to eat for lunch? I will prepare earlier today.
— Honey, you_____. Let's go out to have something different.
A．mustn't B．can't C．shouldn't D．don't have to
34．Tell me and I'll forget. Show me and I not remember. Let me try and I'll understand.

A．can B．may C．must
35．For the safety, everyone _________ obey the traffic rules when he is driving or walking.
A．need B．must C．may D．could
36．——Are you coming to Jeff's party?
——I'm not sure. I _______ go to the concert instead
A．must B．would C．should D．might
37．– Have you decided how to spend your next day off?
– Not yet. We ________ join the school volunteer project.
A．may B．should C．must
38．—Shall I take a taxi?
—No, we_____________. It's not far from here.
A．shouldn't B．mustn't C．needn't
39．— Simon, when are we going to have a class meeting this week?
— Sorry. Ask our monitor, please. He know.
A．may B．can C．will D．shall
40．—Excuse me. May I sit here?
—I'm afraid you _________. My daughter will come back soon.
A．can't B．mustn't C．needn't D．shouldn't
41．The new law says that people_______ drive after drinking wine.
A．wouldn't B．needn't C．won't D．mustn't
42．——Shall we meet at the station at 7 am?
——In fact, we _______. The train _______ until 9 a. m.
A．mustn't; doesn't leave B．mustn't; leaves
C．needn't; won't leave D．needn't; will leave
43．—Is John coming by train?
—He should, but he not. He likes driving his car, but I'm not quite sure.
A．must B．can C．may D．need
44．— Who's that man in our classroom? It ________ be Mr. Brown. He is much taller.
— You mean the man in white? He is an exchange student from England.
A．can B．may C．can't D．mustn't
45．—Who's the woman in red ? Is it Mrs. White?
—It be her. She went to Beijing yesterday.
A．mustn't B．can't C．shouldn't D．must
46．—Must I finish my homework now, Mom?
—No, you _______.You can do it tomorrow.
A．can't
B．needn't
C．mustn't
47．——Fifty dollars for such a T-shirt! You _______ be joking!
——I'm serious．It's made of silk.
A．must B．need C．may D．can
48．— It seems that Mr. Wu is standing there.
— It ______ be him because he called me from Canada just now.
A．mustn't B．can't C．needn't D．shouldn't
49．—Mr. Wang, must I come again to clean the window on Sunday morning?
—No, you _____ . I have asked others to do it.
A．don't have to B．mustn't C．can't D．shouldn't
50．—Look! The man at the gate ______ be our headmaster. He is always standing there every morning.
—No, it ______be him. He is holding a meeting in the office now.
A．must, can't B．must, mustn't
C．can't, can't D．can't, mustn't


答案解析部分
1．C
2．C
3．B
4．B
5．D
6．B
7．D
8．D
9．C
10．C
11．D
12．C
13．D
14．B
15．C
16．B
17．B
18．C
19．A
20．B
21．A
22．B
23．C
24．C
25．D
26．B
27．D
28．A
29．A
30．B
31．D
32．C
33．D
34．B
35．B
36．D
37．A
38．C
39．A
40．A
41．D
42．C
43．C
44．C
45．B
46．B
47．A
48．B
49．A
50．A


初中英语：情态动词强化练习100题
第一部分:1-50 专项练习 第二部分:51-100名师解题
1．— Suzy described every detach of the accident just now.
— Her memory be completely back, then?
A．shall B．might C．must D．could

全面解析：Suzy刚刚描述了每个分开的事故。-那么她的记忆……完全恢复了？根据句意可知此处指的是她的记忆一定是恢复了，故选C。

2．When you are travelling, bring a map because it ___ help you.
A．can't B．mustn't C．used to D．may

全面解析：当你旅行的时候，带一幅地图，因为它可能会帮助你．can't不可能；mustn't不准，不许；used to过去常常；may可能，表示肯定的推测．根据题干When you are travelling，bring a map，当你旅行的时候，带一幅地图，可知应是表示一种推测，即因为它可能会帮助你．故选D。

3．—Kate, it's midnight! Why stay up so late?
—I'd like to go to bed earlier, but the test paper be handed in tomorrow morning.
A．may B．should C．can D．must

全面解析：Kate，都半夜了，你为什么熬夜到这么晚？ 我想要早一点睡觉，但是这个试卷明天早上必须交上。may”可以“；should”应该“；can”能，会，可能“；must”必须“。根据句意Kate熬夜到很晚，说明试卷明天必须交上，语气非常强，故应选D。

4．—Must she go to the teacher's office now?
—No, she .
A．can't B．mustn't C．needn't

全面解析：—她现在必须去老师的办公室吗？—不，她不必。A. can't“不能”，指没有能力或是不被允许；B. mustn't“不准，不允许，禁止”。语气很强地禁止做某事；C. needn't.“不必”，指做某事不是必须的，没有必要的。常用于否定回答must的一般疑问句。故选C。

5．—You look pretty in green, Mary.
—Thanks. Green is my favourite colour, because it make me more energetic.
A．must B．can C．should D．has to

全面解析：—玛丽，你穿着绿色看起来好看。—谢谢你。绿色是我最喜欢的颜色，因为它能使我更有活力。must“必须”，表示要求；can“能”，表示能力；should“应该”，表示建议；has to“不得不”，表示要求。结合句意，此处表示绿色能使我更有活力。故用情态动词can，故选B。

6．We respect the local culture and customs when traveling abroad.
A．can B．need C．may D．should

全面解析： 在国外旅游时，我们应该尊重当地的文化和风俗习惯。A) can“能，会”； B) need“需要”； C) may“可以，可能”； D) should“应该”。结合句意和语境可知选D。

7．The boy in the corner be Tom. He's gone to China.
A．may B．must C．can't D．mustn't

全面解析：这个在角落的孩子不可能是汤姆。他去中国了。否定句中表示推测用can't，意为“不可能”；肯定句中表推测用must，意为“一定”；mustn't表示“禁止，不允许”。故选C。

8．—Who's singing in the next room?
— It be Lucy. She has gone to Hong Kong.
A．can't B．must C．may not D．needn't

全面解析：—谁在隔壁唱歌？—不可能是露西，她去香港了。A. can't ”不可能“；B. must ”一定“；C. may not”可能不“；D. needn't”不必“。She has gone to Hong Kong. 她去香港了，has gone to表示去了还没有回来，因此判断不可能是露西，故答案为A。

9．—Who is our new math teacher?
—It ____ be the one with long curly hair. I am not sure.
A．must B．should C．might D．shall

全面解析：—谁是我们的新数学老师？—可能是留着长卷发的那个。我不确定。A. must ”一定“；B. should”应该“；C. might ”可能“；D. shall”将要“。根据I am not sure.判断，此处是表示没有把握的推测，答案为C。

10．— Must I clean the room now, Mr. White?
—No, you .
A．shouldn't B．needn't C．wouldn't D．can't

全面解析：—怀特先生，我必须现在打扫房间吗？—-不，没有必要。A. shouldn't “不应该”；B. needn't “不必”；C. wouldn't “不会”；D. can't“不能”。一般疑问句“Must…？”的肯定答语为Yes, … must. 否定答语为No, …needn't. 故答案为B。

11．— Listen! Is Angella singing?
— It _________ be her. She has gone to Beijing.
A．may B．can't C．must

全面解析：-听！是Angella在唱歌吗？-不可能是她，她去了北京。may可能；can't不可能；must必须，一定。根据句意She has gone to Beijing可知，唱歌的人不可能是Angella，故应选B。

12．Teenagers allowed to drive .
A．should not be B．should be not C．not should be

全面解析：年轻人不应该被允许驾车。Should是情态动词，其否定表达一般在在后面加副词not，故选A。

13．—Tom， youplay football in the street.
—Sorry， I do it again.
A．needn't； won't B．mustn't； won't
C．can't； will D．won't； can't

全面解析：—汤姆， 你不准在街道上踢足球。—对不起， 我不会再做了。needn't不需要；mustn't； 不准，不能，一般指原则性的事件。所以选B。

14．—Must I dress up as the Monkey King？
—No，you ．You can choose whatever you like．
A．can't B．mustn't C．shouldn't D．needn't

全面解析：—我必须装扮成猴子国王吗？—不，你不必。你可以选择你喜欢的任何东西。此题考查情态动词，A不能；B禁止；C不应该；D不必。根据句意，应选D。

15．—Where is Mom now?
—I'm not sure. She _________ be in the kitchen.
A．shall B．may C．need D．must

全面解析：—妈妈现在在哪里？—我不确定，她也许在厨房。A. shall 将要； B. may 可以，可能； C. need 需要； D. must必须，一定；根据I'm not sure可知是不确定；故选B。

16．All passengers _____ exit at the next stop. The train will not continue.
A．must B．should C．can D．may

全面解析：考查情态动词的用法。句意：所有的乘客下一站必须离开，火车不再走了。A. must 必须，一定 B. should 应该 C. can 能，会 D. may可以，可能。根据句意The train will not continue.火车不再走了，可知乘客必须离开。故选A。

17．— Look! Is it Sally playing under the tree?
—No, it _____ be her. She has gone to Xi'an.
A．can't B．couldn't C．may not D．might not

全面解析：—看，是Sally在树下玩吗？—不，不可能是她，她去西安了。can't表示说话人的猜测；couldn't只使用于could的否定回答。may not表示不可能性。Might not比may not的可能性小。故选A。


18．You________ take an umbrella. The radio says it won't rain.
A．shouldn't B．mustn't C．can't D．needn't

全面解析：你不必带雨伞。收音机说不会下雨。 A. shouldn't不应该；B. mustn't不准，不允许，禁止；C. can't不能，不可能；D. needn't不必。因为天气预报说不会下雨，所以不必带雨伞。故答案为D。


19．—_____ I swim here?
—I'm sorry. Children _____ swim here.
A．Can,mustn't B．May, must C．Must, can't

全面解析：—我可以在这里游泳吗？—对不起。孩子禁止在这里游泳。Can能，能够；mustn't禁止；一定不要，may可以；must必须；一定，can't不可能。May/ Can I……？我可以做某事吗？表示请求允许。根据I'm sorry可知此处表示不允许，所以孩子一定不要在这里游泳，故第二空用mustn't。故选A。

20．The man has many houses in Beijing. I think he ______ be rich.
A．may B．should C．must

全面解析：那个男人在北京有很多房子。我认为他一定富有。我们知道北京的房子很贵，根据The man has many houses in Beijing.可知他一定很有钱。此处是对事情进行肯定推测。may可以，表示允许；should应该，表示劝告；must一定，表示有把握的推测。故选C。

21．—Whose T-shirt is this?

—It ____ be John's. It's ______ small for him.
A．can't; much too B．can't; too much
C．mustn't; much too D．mustn't; too much

全面解析：——这是谁的T-shirt? ——不可能是John的，对他来说太小了。can't不可能；对事情进行否定推测，mustn't禁止；不允许。根据small，可知应该是表示否定，用can't。much too太，强调程度副词too，其后跟形容词。too much太多强调形容词much，,其后跟不可数名词。修饰small用much too。故选A。


22．—Look, Sue is over there.

—That ____ be her. She is in Canada now.
A．mustn't B．can't C．needn't D．won't

全面解析：——看,苏在那边. ——那不可能是她。她现在在加拿大。根据下文 She is in Canada now. 可知那不可能是她。可知是对事情进行否定推测，判断，用情态动词can't， 故选B。


23．—I think our headmaster may be at school.
—No, she _______ be there. She left for Xiamen just now.
A．mustn't B．may not C．can't

全面解析：——我认为我们校长可能在学校。——不，她不可能在那儿，她刚刚去厦门了。根据下文She left for Xiamen just now.可知她不可能在那里。可知是对事情进行否定推测，对事情进行否定推测用情态动词can't，故选C。

24．—Is that girl Susan?
—It____ be her. She left for Beijing yesterday.
A．needn't B．can't C．mustn't D．may not

全面解析：—那个女孩是Susan吗？—不可能是她，她昨天去北京了。needn't不需要，没有必要；can't不可能；mustn't禁止，不要；may not可能不。根据句意She left for Beijing yesterday可知，说话人对这件事是非常肯定的，不可能是Susan，故选B。

25．—Hi，madam．Can I take the story books out？
—No，my boy．They _____ be taken out of the reading-room．It's a rule．
A．mustn't B．needn't C．couldn't D．wouldn't

全面解析：—嗨，夫人，我能把这些故事书拿出去吗？—不，孩子，他们不可以被带出阅览室，这是制度。A. mustn't不可以，禁止；B. needn't不必；C. couldn't不可能；D. wouldn't将不会．根据It's a rule，可知这是制度，所以你不可以把这些书带出去，mustn't不可以，禁止，故答案选A。

26．—Who is singing in the next room? Is it Amy?
—No, it be her. She has gone to Yunnan on holiday.
A．can't B．mustn't C．may not D．needn't

全面解析：句意“—谁在隔壁房间唱歌？是艾米吗？—不，一定不是她。他去云南度假还没回来”。A.不可能；B.禁止；C.可能不；D.不需要。故选A。

27．You had better________ that again.
A．not do B．don't do C．not to do D．won't do

全面解析：你最好不要再那样做了。短语had better not do sth最好不要做某事。故选A。

28．—Must I stay here till you come back?
—No, you ________.
A．mustn't B．can't C．needn't D．shouldn't

全面解析：—我必须待在这里直到你回来吗？—不，你不必。mustn't禁止，不要；can't不能；needn't不必，没有必要；shouldn't不应该。must的一般疑问句，肯定回答用must；否定回答用needn't。故选C。

29．—Listen! Kathy is playing the piano in the next room.
—It __________ not be Kathy. She has gone to Hangzhou to visit the Cross—sea Bridge.
A．can B．must C．need D．shall

全面解析：—听！Kathy正在隔壁的房间里弹钢琴。—不可能是Kathy，她去了杭州参观跨海大桥。can可能；must必须，肯定；need需要；shall可以表示征求意见，或是命令、警告等感情色彩。这是一个表推测的否定句，根据下文，语气比较肯定。must表示推测的时候，只能用在肯定句中，否定句中用can，故选A。

30．Please don't make so much noise. I ________ hear the speaker very well.
A．needn't B．can't C．shouldn't D．mustn't

全面解析：请不要发出那么多噪音。我不能很好地听清楚发言者的话。needn't不必；can't不能；shouldn't不应该；mustn't禁止。根据前半句的Please don't make so much noise.可知别人发出了太多噪音，所以他无法听见演讲者的话，故用情态动词can't。故选B。

31．—Christina, what do you think is the greatest advantage of shopping online?
—At least I spend much time going from shop to shop.
A．shouldn't B．needn't C．can't D．mustn't

全面解析：——Christina,你认为网上购物最大的优点是什么？——至少我不用花时间挨家店跑了。不必用needn't。shouldn't不应该；can't不能；mustn't一定不要。故选B。

32．— __________ I see your ID card? We have to check your personal information.
— Sure. Here you are.
A．Must B．Need C．Should D．May

全面解析：May可以，可能，表示推测的语气；Must必须,一定;Should应该;Need需要.句意:先生,我可以看看你的身份证吗？——我们必须检查你的信息。结合语境可知选D。
33．If you _______ the book, you _______ buy it right now, I think.
A．needn't; needn't B．don't need; don't need
C．don't need; needn't D．don't need; needn't to

全面解析：如果你不需要这本书，我觉得现在你就没有必要买它。needn't是情态动词need的否定形式，后面跟动词原形；don't need是实意动词need的否定形式，后面跟to do sth.或者名词做宾语，根据句意可知应选C。
34．— __________I wear a tie to Janet's birthday party?
— No,you needn't. But do remember to bring her a present.
A． Must B．Should C．Need D．Can

全面解析：——我必须戴领带去参加Jane的生日聚会吗？ ——不，你不必，但是记住给她带个礼物。对于must的否定回答是用needn't。而should应该；need需要；can可以。所以根据回答可知选A。

35．—Can you find the differences between the two pictures?
— Yes, I _______.
A．may B．can C．must D．could

全面解析：情态动词can引导的一般疑问句，回答时也应用can来回答，故选B。

36．Boys and girls, you ______ talk in class, or you will miss something important.
A．can't B．mustn't C．shouldn't D．needn't

全面解析：同学们，不要在课堂上说话，否则你将会错过重点。根据“ or you will miss something important.”可知是禁止，故选B

37．You return the book now. You can keep it until next week if you like.
A．have to B．can't C．mustn't D．needn't

全面解析：你不必现在归还这本书，如果你喜欢，你可以到下周再还。have to必须；can't不能；mustn't不准，一定不要；needn't不必。根据You can keep it until next week if you like（你可以到下周才还），可知现在不必还，用needn't。故选D。


38．—Can I walk across the road now, Mum?
—No, you ________. You have to wait until the lights turn green.
A．couldn't B．shouldn't C．needn't D．mustn't

全面解析：——妈妈，现在我可以过马路吗？——不，你一定不能。你必须等灯变绿了。couldn't不能，shouldn't不应该，needn't不需要，mustn't一定不要，禁止，过马路一定要遵守交通规则，可知此次是绿灯前一定不要过马路，故选D。
39．— Why don’t you ask your friends for help?
—Because I am able to do it by myself.
A．can B．should C．must

全面解析：——你为什么不向你的朋友寻求帮助？——因为我自己可以解决。be able to=can意为“能，可以”，B.应该； C.必须，故选A。

40．— Must I finish my homework today?
— No, you ______________. You ______________ finish it tomorrow.
A．can't; may B．mustn't; must C．needn't; may D．mustn't; can

全面解析：句意“我必须今天把作业做完吗？不，不需要，你可以明天做完。”must not是“禁止的”，“can not ”不能，“need not”不需要“may语气较委婉”，故选C。

41．一Must I hand in my homework now，Mr. Smith?
—No，you .
A．mustn't B．shouldn't C．can't D．needn't

全面解析：——史密斯先生，我现在必须交作业吗？——不，你不必。mustn't一定不要；shouldn't不应该；can't不能；needn't不必。故选D。

42．— ________ I know by what time you want the report to be done?
— By the day after tomorrow. ______ you finish it on time?
A．May; Can B．Must; Need C．Could; Must D．Need; Would

全面解析：—我可以知道你何时完成这个报道吗？—后天，你能按时完成它吗？may可以，请求允许；can能，表示能力；must必须，表示必要；need需要，表示必要；could可能，表示猜测；would愿意，表示意愿。第一空表示请求，故用情态动词may。第二空表示能力，故用情态动词can。故选A。

43．Jill_______be in the office now. She has gone to the reading room.
A．can't B．mustn't C．needn't D．shouldn't

全面解析：姬尔现在不可能在办公室。她去阅览室了。B mustn't 不准 不许 C needn't 不需要 D shouldn't 不应该 A can't 不可能，表示有把握的否定的猜测。所以选A。

44． — you swim?
—Yes, I can.
A．Must B．May C．Can

全面解析：—你会游泳吗？—是的，我会。must 必须,may 可以,can 能，会,结合句意和答语，故选C。


45．— Must I hand in my homework now?
— _____
A．Yes, you need. B．No, you mustn't.
C．Yes, you have. D．No, you needn't.

全面解析：—我必须现在交作业吗？—不，你不必。由must 引导的一般问句的否定语需用needn't,故答案为D。


46．—Must I clean the room now, Mom?
—No, .
A．you mustn't B．you needn't C．you can't

全面解析：－妈妈，我必须现在打扫房间吗？－不，你不必。mustn't：不准，不允许，禁止；needn't：不必；can't不能，不可能。前问句询问“是否必须”，回答“必须”或“不必”。故选B。

47．—I've bought all the food for the party tonight.
—Thank you. Then I _______ go to the supermarket.
A．can't B．mustn't C．shouldn't D．needn't

全面解析：－今天晚上我买好了所有晚会的食物。－谢谢你。那么我就不必去超市了。A. can't不能；B. mustn't不准，不允许，禁止；C. shouldn't不应该；D. needn't不必。你买好了，我就不必去买了。故选D。

48．— _______ you play tennis?
—Yes, and I'm a good player.
A．Can B．May C．Must D．Should

全面解析：——你会打网球吗？——会，我是一名优秀的网球员。Can能，表示能力；may可以，表示允许；must必须，表示要求；should应该，表示建议；结合句意，此处表示能力，故用情态动词can，故选A。

49．—We've got everything ready for the picnic.
—Do you mean I __________ bring anything with me?
A．can't B．mustn't C．couldn't D．needn't

全面解析：—我们已经为野餐准备好了一切。—你的意思是我不必带任何东西吗？A. can't 不能；B. mustn't 表示禁止，一定不要；C. couldn't不能，表示过去时态；D. needn't不必。结合句意，故选D。

50．—Do you think that Kobe will be elected as the MVP this year?
—It _________ him. He has retired(退役) since April 13.
A．can't be B．mustn't be C．must be D．can be

全面解析：——你认为科比会被选为今年最有价值球员吗？——他不可能。自从4月13日，他已经退役了。can't不可能，表示有把握的推测；mustn't禁止； must一定，表示又把握的推测；can能够，表示能力。根据He has retired(退役) since April 13. 可知此处有依据证明科比不可能被选为最有价值球员。故选A。