Why haven't they finished this work yet?They are supposed _______ it by Friday evening.
A.to finish B.having finished C.finished D.to have finished
选哪一个
人气：336 ℃ 时间：2020-04-20 21:57:14
解答
D,这个句子的意思是为什么他们还没完成工作?他们应该周五晚上就完成的啊.
be supposed to have done 表示过去应该做某事但是没有做,符合这个题意.
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