--- I really don’t know how ________  this problem.--- Let me see.
#49068
A
to do with
B
to deal with
C
doing with
D
dealing with
推荐题目
It’s easy ______ English and it’s important ______it.
#49674
A
study, use
B
say, speak
C
speak, say
D
to learn, to practice
When we saw her in the street, we stopped ______ to her.
#51041
A
talk
B
to talk
C
talking
D
talked
Would you please   me how to do it ? 
#50447
A
tell
B
telling
C
to tell
D
not to tell