问题

I’m very grateful for your help and hopethat someday I may be able to do something for you___．[ ]

A: in exchange
B: in turn
C: in vain
D: in particular

正确答案是：

同类题型

Our school wants two good teachers_____ the School Art Festival.

___do you like better, this one or that one

The jeans are________, so I will take________.

What ______ honest boy!

She _____________ a new novel she haswritten recently in the talk show.