题目内容
【题目】Peter, as well as his assistant,_________a chemical experiment yesterday, but I wonder whether he has finished it.
A.performedB.was performingC.had performedD.were performing
【答案】A
【解析】
考查主谓一致和时态。句意:彼得和他的助手昨天做了一个化学实验,但我不知道他是否完成了。在A as well as B结构中,主语为A,因此谓语动词由A决定,由yesterday可知,时态为一般过去时。故选A项。
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