“Is Jack on duty today?”“It ____ be him. It’s his turn tomorrow.”A．mustn’tB．won’
题型：不详难度：来源：
“Is Jack on duty today?”“It ____ be him. It’s his turn tomorrow.”| A．mustn’t | B．won’t | C．needn’t | D．can’t |
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答案
| D |
解析
| 本题考查情态动词。句中can’t表示“不可能”之意。句意：“今天杰克值日吗？”“不可能是他，明天轮到他。” |
举一反三
If I were to have time, I to the theatre tomorrow evening.| A．would have gone | B．should go | C．had gone | D．were to go |
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. My pain ___________ obvious the moment I walked into the room, for the first man I met asked me pitifully:" Are you feeling all right?"| A．must be | B．must have been | | C．could be | D．could have been |
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He must have attended the meeting yesterday,___________ he?| A．didn’t | B．mustn’t | C．needn’t | D．hasn’t |
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--Where is Xiao Wang?
--I don’t know. He__________ be in the library. |
You must have waited here for a long time ,___________you?| A．mustn’t | B．didn’t | C．haven’t | D．hadn’t |
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