Question

-Are you free after school?

-Sorry．I've planned to treat a friend of mine to dinner ________ for his help．

1. A.
   in addition
2. B.
   in turn
3. C.
   in return
4. D.
   in total

Answer 1

C
考查短语辨析。in return作为(对……的)回报。treat a friend of mine to dinner in return for his help意为“请我的一位朋友吃饭来回报他对我的帮助”。in addition此外；in turn轮流，又(对别人)做同样的事；in total总共。