用恰当的介词填空:Did you enjoy yourself ----Li Lei's birthday party?---whom did you buy the book?We must help each other and learn---each other.

问题描述:

用恰当的介词填空:Did you enjoy yourself ----Li Lei's birthday party?
---whom did you buy the book?
We must help each other and learn---each other.

其实,enjoy youself 是有语病的,你可以enjoy the music, enjoy the party,怎么可以enjoy youself /自己呢!