() 13. 一They speak perfect English. How long have they learnt it?

一 they were seven years old.

   A. Since   B. When   C. After   D. Until

() 12. This work needs close teamwork.   will be achieved unless we work well together.

   A. Nothing   B. Anything   C. Something   D. Everything

() 11. We teenagers shouldn't be impatient our own problems.   they are solved,we can never give up.

   A. in;If   B. with;Since   C. to;Until   D. with;1 ill

() l0.   our national football team lost the game to such a weak team,I didn't have any doubt about the new coach's ability.

   A. Until   B. By the time   C. Unless   D. After

() 9. —Have you seen the film Gravity？

      —Yes,it's well worth . The scenes in space are amazing that IVe seen it twice.

   A. seeing;too   B. to see;enough

   C. seeing;so   D. to see;such

() 8. If you go,at least wait until the rain stops.

   A. can   B. may   C. must   D. will

() 7. I'm afraid the concert has begun.

—Don’t worry. It until Li Yundi .

   A. doesn't begin;comes   B. won’t begin; will come

   C. won’t begin; comes   D. doesn’t begin; will come

() 6. I’ m  feeling much better now so you call the doctor.

   A. mustn't   B. may not   C. can't   D. needn’t

() 5. Boys model planes to dolls,while girls have dolls than model planes.

   A. would rather;prefer   B. prefer;would rather

   C. would rather? would rather   D. prefer;prefer

() 4. not only Jim but also his parents a few places of interest since they came to China?

   A. Has;visited     B. Will;visit 

    C. Have;visited   D. Did;visit