--Is Professer Smith giving the speech today?--It ________ be him. He is abroad
题型：不详难度：来源：
--Is Professer Smith giving the speech today?
--It ________ be him. He is abroad right now.| A．mustn"t | B．needn"t | | C．won"t | D．can"t |
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答案
| D |
解析
试题分析：句意：--史密斯教授今天做演讲吗?--那是不可能的，他现在在国外。mustn"t禁止； needn"t不必；won"t将不；can"t 不可能。这里根据He is abroad right now.所以确定不可能是他，故选D。
点评：本题难度适中。情态动词是高中阶段的重难点之一，需要考生熟记它们的用法，在各类考试中经常出现，它主要用于表示对各种情况进行推测或责备等。
即学即练：—Dad, would you buy me an MP3 player if I do well in the final exam
—I ________, I promise.
A.would B.shall C.should D.will
解析：D。句意：will可用来表达意愿，本句的语义环境为：如果你考得好，我愿意给你买部MP3。故选D。 |
举一反三
--- I once got lost during my first visit to Beijing.
-- Oh, did you? You _______ me as your guide.| A．might have asked | B．could ask | C．would have asked | D．would ask |
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| Liza ______ well want to go on the trip ― she likes traveling. |
―Thank you very much for giving me a hand when I was in trouble.
―Don’t mention it. I only did what anyone else _______ in my place.| A．must do | B．might do | | C．would have done | D．can have done |
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—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
—_______ my students have a try?| A．May | B．Must | C．Shall | D．Will |
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A girl calling herself Mary is waiting outside; _____ she come in now?| A．Need | B．Must | C．Will | D．Shall |
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