Tom () his homework yesterday,because he was in hospital all day.
题目
Tom () his homework yesterday,because he was in hospital all day.
A.can't finish B.couldn't finish C.couldn't have finished D.mustn't finish
选哪一个呢?
我也选的C,但是是感觉。
答案
答案是C,表推测:汤姆昨天不可能完成作业了,因为他昨天住院了.
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