题目内容
【题目】No one knows how the huge rocks _______ and _______ without our modern machines eight hundred years ago.
A. were cut; moved B. were cut; move C. are cut; moving D. are cut; moved
【答案】D
【解析】根据时间状语可知从句中叙述的为过去发生的事情, cut和moved为并列谓语所以
用过去时态,故选D
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