—Thatmusthavebeenalotofwork.—Yeah,it      usthreedayst...

问题详情：

 —That must have been a lot of work.

—Yeah, it         us three days to finish it.

A. takes                  B. had taken           C. took           D. was taking

【回答】

C

知识点：一般过去时及其被动式

题型：选择题