问题
选择题
—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
答案
答案:C
考查动词时态。句意:——你们一定做了许多工作。——是的,完成这些工作花费了我们三天的时间。根据“must have been”可知,此处是对过去情况的一种推测,故“花费”这一动作应发生在过去,所以用一般过去时。