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