问题 选择题

Old Richard,        ill so long, is losing his memory and needs to be attended to.

A.to be

B.being

C.having been

D.to have been

答案

答案:C

题目分析:考查非谓语动词。老理查德,已经染病许久,正在丧失记忆力并需要得到照料。动词不定式表示将来,根据句意可知,染病是已经发生的事情,排除A、D;当两个动作先后发生时,常用having done,相当于一个原因、时间状语从句,这里相当于because he has been ill so long,故选C。

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