1. He               write to me once a week but he doesn’t write any more.

uses to use to using to used to

2. What were you doing when the mailman               to your house.

comes coming came come

3. My friends asked me               keep in touch on leaving.

promised to promise to to promise to promising to

4. I come from Vietnam so I am not               on the left.

used to be driving used to driving used to be drive used to drive

5. What is the               of your country? -75,000,000 people

separation introduction population addition

6. Don’t forget to add sugar to the mixture. This               is important.

adder added additional addition

7. Either Minh or his friends               going to the beach today.

was were is are

Television is one of man’s most important means of communication. It brings events and sounds form around the world into millions of homes. A person with a television set can sit in his house and watch the President making speech or visit a foreign country. He cap see a war being fought and watch statesmen try to bring about peace. Through television, home viewers can see and learn about people, places, and things in faraway lands. TV even takes its viewers out of this world. It brings them coverage of America’s astronauts as the astronauts explore outer space. In addition to all these things, television brings its viewers a steady stream of programs that are designed to entertain. In fact, TV provides many more entertainment programs than any other kind. The programs include action-packed dramas, light comedies, sporting event sand motion pictures,

8. They enjoy               the internet

to surf having to have surfing

9. Oh, look at this! It is an amazing invention. Can you tell me who               this kind of machine?

manufactured produced invented made

10. It is terrible sound. I can’t               the noise

stand listen speak tell