-Thankgoodness,everythingturnedoutthewaywehopedyesterday.-Yes!Wemoreaboutit.()A.shouldhaveworriedB.couldhaveworriedC.needn'thaveworriedD.mustn'thaveworried
-Thank goodness,everything turned out the way we hoped yesterday.
-Yes!We ______ more about it.( )
A. should have worried
B. could have worried
C. needn't have worried
D. mustn't have worried
这里表示对过去状况的推测,用情态动词+have done形式.根据前面的"一切都是我们昨天希望的方式."可知,用needn't have done,表示本来不需要做某事而做了.should have done表示过去本该做…(实际却没做),could have done表示本来能够做某事而没有做,不存在mustn't have done这个结构,故选C.
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