题目内容

【题目】There are many people downstairs. What do you think _____?

A. to happen B. happening C. is happened D. has happened

【答案】D

【解析】考查时态。句意楼下有很多人,你觉得发生什么了?”happen不能用于被动语态;排除CB项缺少is而不能构成现在进行时,排除B;不定式to do不能直接作谓语,排除A。故选D

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