问题

You should be careful when _.—Yes, I will. I’d like to know when__ to have a rest.

A: mustn’t be
B: couldbe
C:might be
D: can’t be

正确答案是：

同类题型

She had to leave school_______ her family couldn’t afford her education.

I think you look nice in thered dress—-____

I turned to the headmaster and he promised todo everything _______ his power to help me out

The bookshop near our school_______ the whole day on Sunday.

Hello! Are you Mr Wang — _______