Question

Why don’t you _____ 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

Answer 1

C

why don’t you do sth是固定句型结构意思是你问什么不…表示一种建议；finish doing sth表示完成某事也是固定句型结构。