2. We all agree that we should make a better plan.(改为简单句) 

We all             make a better plan.

1. There is some orange in the bottle.(变成否定句) 

There             orange in the bottle.

7.        (luck) , I could get the last ticket to the concert.

8. Be careful        ( not fall) off the ladder.

9. After so many        ( year) practice,Li Na has been a wellknown tennis player.

5. To reduce air pollution,we'd better ride more often instead of      (drive) .

6. Why not        (bring) your cousin with you to visit the museum?

3. It is        ( possible) for humans to live on Mars at pres- ent.

4. Isn’t it strange that the cat is used to        ( lie) beside the dog peacefully?

1. Susan likes        (swim) while Kate likes dancing.

2. Amy looks smart with a pair of        ( glass) on her nose.

10. Mr. Li asks the students       in the river,because it’s too dangerous.

   A. swim   B. to swim

   C. not to swim   D. to not swim

9. Wang Dong didn’t go to school yesterday       he was ill.

   A. so   B. if

   C. because   D. unless

8. I will do some cleaning as soon as I       my homework.

   A. finish   B. will finish

   C. has finished   D. finished

7. China is going to       a manned space station around 2020 to explore more space.

   A. set up   B. put up

   C. wake up   D. turn up