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：
