Question

【题目】--Do you know umbrellas are provided for free at the underground station?

—Yes. But we return it in a week， or we’ll pay for it.

A. can B. would C. might D. must

Answer 1

【答案】D

【解析】试题分析：句意：--你知道在地铁站雨伞是免费提供的吗？--是的。但是我们必须在一周内归还，否则我们就要为它付款。can能，would,will的过去式，might可以，may的过去式，must,必须。结合句意，故选D。