问题
选择题
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
答案：C
考查固定搭配。Why not do sth.为什么不做某事；finish doing sth.做完某事。所以选C。