问题
Why not ______ your teacher for advice when you don’t know ______ the problems
A:ask; what to do with
B:to ask; how to deal with
C:ask; what to deal with
D:to ask; how to do with;
B:to ask; how to deal with
C:ask; what to deal with
D:to ask; how to do with;
正确答案是：
