Since nobody gave him any help, he have done the research on his own.A．canB．m - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Since nobody gave him any help, he have done the research on his own.

A．can

B．must

C．would

D．Need

答案

解析

考查情态动词和虚拟语气。can have done sth可能已经做了某事；must have done sth一定已经做了某事；would have done表示与过去的事实相反；need have done sth本来需要做某事。句意“因为没有人给他任何的帮助，他一定是自己完成的那项，研究。”根据，句意可知，表示的是肯定的推测，用must，故选B。
【考点定位】情态动词和虚拟语气。

核心考点

试题【Since nobody gave him any help, he have done the research on his own.A．canB．m】；主要考察你对虚拟语气等知识点的理解。[详细]

举一反三

Don’t turn off the computer before closing all programs you could have problems

A．or

B．and

C．but

D．so

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If we a table earlier, we couldn’t be standing here in a queue.

A．have booked

B．booked

C．book

D．had booked

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I to my cousin^’s birthday party last night, but I was not available

A．went	B．had gone
C．would go	D．would have gone

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I should not have laughed if I ______ you were serious.

A．thought

B．would think

C．had thought

D．have thought

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—Do you think George has passed the driving test?
—No. If so, he _____his car to our college yesterday.

A．would drive	B．drove
C．would have driven	D．had driven

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