---I saw Mr. Smith at Xianyang Airport this morning. ---You ____. He’s still o
题型：不详难度：来源：
---I saw Mr. Smith at Xianyang Airport this morning.
---You ____. He’s still on holiday in Hawaii.| A．can’t | B．couldn’t have | C．mustn’t have | D．needn’t |
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答案
| B |
解析
试题分析：句意：--今天早上我在咸阳机场看见斯密斯先生了。--你不可能看见他的，他正在夏威夷度假。因为是对过去的事情的推测，所以用情态动词+have done，排除AD，还有斯密斯先生在夏威夷所以是不可能出现在咸阳机场的，所以是否定推测，用couldn’t have done“过去一定不会做了”，must have done是肯定推测，“过去一定做了”，所以选B。 |
举一反三
(2013·北京东城二次联考)—________ you interrupt now？Can"t you see I"m on the phone?
—Sorry，sir，but it"s urgent.| A．Can | B．Should | | C．Must | D．Would |
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Students ________ remain in their seats until all the papers have been collected.| A．shall | B．might | | C．could | D．will |
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(2013·合肥一检)According to the rules and regulations, all payments ________ be made in cash in the shopping center.| A．shall | B．can | | C．must | D．should |
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It ________ have been her to leave her child alone and do whatever she wanted. She isn"t such a person.| A．couldn"t | B．mustn"t | | C．mightn"t | D．wouldn"t |
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—Oh, my God！Our teacher is so mean!
—Calm down, my friend.Even though she is tough sometimes, she ________ be nice if you really work hard.| A．must | B．should | | C．can | D．shall |
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