【题目】-So you ________ the accident?
-Yes. I was waiting for the bus across the street.
A.witnessedB.have been witnessingC.would witnessD.had witnessed
在线课程【答案】A
【解析】
考查动词时态。句意：——这么说你亲眼看到了这场事故？——是的。我当时正在马路对面等公交车。根据后文I was waiting for the bus across the street.可知，事故发生在过去，故用一般过去时。故选A。