题目内容

--- I didn’t see you at the party yesterday. Why?  
--- Because I ________ for an important person from America at that time.
A.was waiting B.is waitingC.will waitD.have waited
A
根据问句内容I didn’t see you at the party yesterday.说明问的是当时我做什么,应该用过去进行时,故选答案A
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