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Therearemanypeopledownstairs.Whatdoyouthink______?A.tohappenB.happeningC.ishappenedD.hashappened选哪个?
题目内容：
There are many people downstairs.What do you think ______?A.to happen B.happening C.is happened D.has happened 选哪个?为什么?优质解答
选D.do you think 是插入语,去掉以后就可以看出句中缺谓语,happen是不及物动词,不能用被动语态.
优质解答
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