问题

I am very grateful for your assistance, and hope that one day 1 may be able to do something for you__________.

A:in turn
B:in case
C:in return
D:In use;

正确答案是：

同类题型

________ it was late, the students were still studying in the classroom.

My parents are ______ famouswriters. most C

The shop assistant asked the woman ________.

I’d like to go with you, _____________I’m too busy.

Excuseme,butcanyoutellme________?