题目内容
Although the teacher had told Bob the history of telephone, Bob didn’t know when ____.
A. it was invent B. was it invented C. it was invented D. it invented
C
【解析】考查宾语从句和被动语态。句意为:尽管老师给鲍勃讲了电话的历史,但他还是不知道电话是什么时候发明的。首先,宾语从句要用陈述句的语序,即:连接词+主语+谓语+其他,所以B不对;另外,it(电话)是invent(发明)的承受者,所以要用被动语态(be+过去分词)。故选C。
考点:考查宾语从句和被动语态的用法。
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