1.playing/to play

2.is coming/don't want

3.opened

4.to go

5.took/was/is being marked

6.do you smoke

7.was

8.reading

9.did you go/went/didn't enjoy

10.to see/was

11.to have

12.smoking

13.is doing/thinks/knows

14.was /to go 

III.

1. I don't enjoy playing chess. I'd rather to play football
2. Look! The bus is coming. I don't want to miss it!

3.The department store always opened six days a week last year.

4. It's time for us to go.

5.Two days ago I took my final exam.It was pretty difficult.The papers is being marked now.

6.How many cigarettes you smoke a day ? do you smoke

7.The policeman who had stopped me be now very angry.

8. I am fond of reading the sience book.

9. Did you go out last night, hung? Yes, i went to the cinema, but i didn't enjoy it. 

10.I want to see the house where Ho Chi Minh was born .

11. Would you like to have something to eat?

12.My father stopped smoking 5 years ago .

13.  Ba is doing an exercise on the present tenses at this moment and he thinks that he knows how to use it now. 

14.It was  a nice day , so I dicided to go for a walk .
Chúc bạn học tốt! ^^