Question

—That must have been a long trip．
—Yeah, it        us a whole week to get there．

A．takes

B．has taken

C．took

D．was taking

Answer 1

C

根据上句：那一定是一次很长的旅行吧。must have done 表示的是对过去事情肯定的推测。故答语中应用一般过去式。选C。