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Exercise 1: Rewrite the following sentences, using unless instead of if:

a. If you are not careful, you will cut yourself with that knife.

…………………………………………………………………………………………………………………..

b. If you do not like this one, I’ll bring you another.

…………………………………………………………………………………………………………………..

c. If she does not hurry, she will be late.

…………………………………………………………………………………………………………………..

d. I’ll not be able to do any work if I don’t have a quiet room.

…………………………………………………………………………………………………………………..

e. If she doesn’t water these tress, they will die.

…………………………………………………………………………………………………………………..

f. He will not stay here if he wants to go.

…………………………………………………………………………………………………………………..

Most teenagers (1)       ________ the world (2)        _______ TV. Some of them listen to the radio. In a lot of countries, the most popular shows on TV are (3)       . They (4)      ___________ordinary characters and how they live. 

Many teenagers (5)___________pop music. There are lots of music programs on TV and one satellite TV(6)         __________ only shows pop videos.  

In many countries, people can (7)         ________ satellite TV. Often in large (8)    __________ , cable TV is available. With satellite and cable TV, it’s possible to choose from a wide variety of programs.    

7. Many people…………………in this club  

A. take               B. participle                   C. enjoy           D. interested 

12. What time did he………………home last night?

A. get                B. come                  C. arrive                    D. all are correct

13. What did you do……………your vacation?

A. on               B. during            C. in              D. with

Exercise 6. Complete the second sentence in each pair so that it has similar meaning to the first sentence.

1. A lot of people use cell phones.

→ Cell phones…………………………………………………………………………..

2. Miss. Diep hasn’t taught us since the last semester.

→ We………………………………………………………………………………………

3. Mr. Vinh teaches our English lessons.

→ Our English lessons……………………………………………………………….

4. A student is doing that experiment.

→ That experiment…………………………………………………………………….

5. Our teachers give us a free period this Saturday to prepare the festival.

→  We……………………………………………………………………………………..

6. Did you buy this dictionary two weeks ago?

→ Was……………………………………………………………………………………..

7. We should clean our teeth twice a day.

→  Our teeth……………………………………………………………………………..

8. Alan’s knowledge about science and technology doesn’t impress me.

→ I………………………………………………………………………………………….

9. Her father drive all of us to school every day.

→ All of us……………………………………………………………………………….

10. They are going to build a new school here next year.

→ A new school………………………………………………………………………..