---The man in a black suit _______ be our youth worker.---It _______ be him. I s
题型：不详难度：来源：
---The man in a black suit _______ be our youth worker.
---It _______ be him. I saw him in the classroom building some minutes ago.| A．can; could | B．must; can’t | C．can; mustn’t | D．must; won’t |
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答案
| B |
解析
试题分析：本题的含义是穿在黑色套装的那个人一定是我们的青年工人，下句回答在教学楼看到他，所以不可能是他，can"t表示猜测不可能的意思，must表示猜测一定的意思，故本题选B。而mustn"t表示不准的意思，而won"t表示将来时不会的意思，与题意不符。
点评：在英文中情态动词后跟动词原形，注意部分表示猜测单词的区别，must表示的可能性最大，意思为一定，can"t表示的可能性最小，意思为不可能，注意它们的使用和区别。 |
举一反三
You ______to meeting this afternoon if you have something important to do.| A．needn’t to come | B．don’t need come | | C．don’t need comimg | D．needn’t come |
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----May I listen to the music here, Mr White? ----Sorry , you’d better ____ it like that..| A．not to do | B．not do | C．don’t do | D．not do so |
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These broken pieces of plates don’t fit together, they ___________ parts of different ones.| A．can’t be | B．can be | C．mustn’t be | D．must be |
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Today is Wednesday. He _____ be at home. He _____ be at school.| A．can"t; can | B．can"t; must | C．mustn"t; must | D．mustn"t; can |
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—Must I make a phone call to him now?
—No, you________. You ______ write an email.| A．mustn’t; may | B．may not; must | C．shouldn’t; must | D．don’t have to; may |
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