--- 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
Don’t throw away the waste paper. It needs so that it can be reused.
#49285
A
to destroy
B
destroying
C
to collect
D
collecting
— Do you know why he left so early?—_______for the English test, I guess.
#51187
A
To study
B
Study
C
Studied
D
Studying