____ snacks and drinks, but they also brought cards for entertainment when they had a picnic in the forest.  

A. Not only they brought              B. Not only did they bring

C. Not only brought they              D. Not only they did bring

Not until I began to work ______how much time I had wasted.

A. didn’t I realize B. did I realize    C. I didn’t realize   D. I realized

 31. —— This is one of the oldest trees in the world.

  _____ such a big tree.

 A. Never I have seen                     B. I haven't never seen

 C. Never have I seen                     D. I have seen never

_____ the expense， I _____ to Italy.

A. If it were not， go                B. Were it not for， would go

C. Weren't it for， will go           D. If it hadn't been， would have gone

After many months of hard work, they manager __ off all the debts.

A. to pay   B. paying   C. paid    D. paying

Tom is not used to __ in public.

A. speak   B. speaking   C. being spoken   D. having spoken

After singing a song, he __ us a joke.

A. went on telling   B. went on to tell   C. went telling   D. went to tell

He is the only one of the students who _____elected.

A. are                  B. have               C. has            D. is

Writing stories and articles _____what I enjoy most，

A.is                      B. are              C. was         D. were

Either you or I _____going to the teachers‘ office after class.

A. am                  B. is                   C. are            D. will