问题：
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
Why not______ your teacher for help when you can’t finish ______ it by yourself?
B. to ask; writing
C. ask; writing
D. asking; write
[ ]
A. ask; write B. to ask; writing
C. ask; writing
D. asking; write
参考答案：