Why not your teacher for help when you can’t finish it by yourself?
- A.ask;write
- B.to ask;writing
- C.ask;writing
- D.asking;write
答案
正确答案:C

why not do sth“为什么不做某事”,finish doing sth“完成做某事”。此题的意思是“当你自己写不完时,为什么不找你的老师寻求帮助呢?”所以正确答案为C。

略
