15.If the teacher correct it, we will understand it

14.If Mary comes, Peter will be happy

13.She works slowly

12.He dances well

11.We are fast runner

10.She is a beautiful singer

9.The guide asked us not to touch this picture

8.He asked me to shut the door

7.The teacher asked him if he thought before he answered

5.If the house were not too expensive, we could buy it

4.If the weather were not too cold, we could go swimming

3.She wishes her daughter could speak English

2.Hung wishes he were not busy

1. I haven't seen he for two years

2. Hung wishes he wasn't busy

3. She wishes her daughter could speak English

4. If the weather wasn't too cold, we could go to swimming

5. If the house wasn't too expensive, i could buy it

6. Mary asked Tom that Who would open the box for her

7. The teacher asked him If he thought before he answered

8. He told me to Shut the door

9.  The guild told s not to touch that picture

10. She is sings beautyfully, isn't she ?

11. We are running fast, aren't we ?

12. He is a good dancer, isn't he ?

13. She is a slow worker, isn't she ?

14. If Mary comes, Peter will be happy

15. If the teacher corrects it, we will understand it