1.It's 2 years since I saw him

-I haven't seen him for 2 years

2.Hung is busy.

-Hung wishes he weren't busy

3.Her daughter cannot speak English.

-She wishes her daughter could speak English

4.The weather is too cold, so we can't go swimming

-If the weather is too cold, we can't go swimming

5.I can't buy the house because it is too expensive.

-If the house is too expensive, I can't buy it

6.Mary asked,''Tom, who will open the box for me

-Mary asked Tom who would open the box for her

7.The teacher asked him,''Do you think before you answer?''

-The teacher asked him if he thought before he answered

8.He said to me,''Shut the door''

-He told me to shut the door

9.The guide said to us,''Don't touch this picture,''

-The guide told us not to touch that picture

10.She sings beauifully

-She is a beautiful singer

11.We run fast

-We are fast runners

12.He is good dancer

-He dances well

13.She is a slow work

-She works slowly

14.Mary will come. Peter will be happy

-If Mary comes, Peter will be happy

15.The teacher will correct it. We will understand it.

-If the teacher corrects it, we will understand it

16.Ronaldo wins the gold ball of FIFA.

-The gold ball of FIFA is won by Ronaldo

17.Mr.Hung keeps a large collection of medals

-A large collection of medals is kept by Mr.Hung

18.The principle bought many teaching aids for our school

-Many teaching aids were bought for our school by the principle

19.Minh Quang caught the ball easily

-The ball was caught easily by Minh Quang

20.They have just held an English workshop

-An English workshop has just been held