题目内容

18. ―I heard the phone ringing in the office next door.

―You     it. They haven't got a phone yet.

A.    couldn't hear

B.    couldn't have heard

C.    didn't hear

D.    wouldn't have heard

18.   B考查情态动词。句意："我听到隔壁办公室电话一直在响。""你不可能听到的。他们还没有电话呢。"根据后句可知，此处否定对方的话，是对过去的事实的一种否定推测，用couldn't have done,意为"不可能做过某事"。故选B。

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