—Look! The boy in the white shirt ___be Tom. --It ____be him. I saw him enter th
题型：不详难度：来源：
—Look! The boy in the white shirt ___be Tom.
--It ____be him. I saw him enter the library just now. | A．must; can’t | B．must; mustn’t | | C．may; shouldn’t | D．may; mustn’t |
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答案
| A |
解析
| 考查情态动词.句意:看,这个穿白衬衫的男孩一定是汤姆.-不可能是他。我刚才看见他进了图书馆。肯定性推测用must，否定性推测要用can’t。故选A。 |
举一反三
---Must we donate our pocket money to the poor right now?
---No, you _______. You can think it over and do it before Friday.| A．mustn’t | B．needn’t | C．can’t | D．couldn’t |
|
—______ I take the magazine away from the reading room?
— No, you mustn’t. You ______ read it only here.| A．Must; must | B．Must; can | C．Need; must | D．May; can |
|
--______ we clean the classroom at once?
--No, you _____. You____ clean it after school.| A．Must, needn’t, may | B．Must, mustn’t, can | | C．Shall, can’t, must | D．Need, mustn’t, may |
|
--Listen! Is Tom singing in the room?
-- No, it ______ be Tom. He has gone to Paris.
A. mustn’t B. needn’t C. can’t |
—________ I swim here?
—I’m sorry. Children _______ swim alone here.| A．Must , can’t | B．May , must | C．Can, mustn’t | D．Can’t can |
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