问题 选择题

No one knows how the huge rocks   and ___ without our modern machines eight hundred years ago.

A.are cut; moved

B.were cut; move

C.are cut; moving

D.were cut; moved

答案

答案:D

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

单项选择题
单项选择题