To tell you the truth, it's very hard for us to help them get rid of Internet addiction. But we _________ on this problem trying to improve the situation.

A) contact

B) progress

C) touch

D) pace

A) shouldn't B) can't C) mustn't D) needn't

A) will come;will go

B) come;go

C) will come;go

D) come;will go

A) if

B) that

C) whether

D) why

A)we found

B)did we find

C)have we found

D)we have foundSection B

A)where

B)that

C)which

D)how

A)on

B)for

C)at

D)to

A)so

B)what

C)that

D)while

A)being discussed

B)to be discussing

C)having discussed

D)discussing

A)on which

B)by which

C)into which

D)from which