Match the words that go together. Write the letters next to the numbers.

Test

A. Complete the sentences with the correct form of the verb. Then write your own sentence with zero or first conditional.

1. If the light is green, the machine is on. (zero)
2. If air gets hot, it rises. (zero)
3. If you watch Channel 3 tonight, you will see me on TV. (first)
4. If you don't know what to write about, I will give you some ideas. (first)
5. If you want, I will show you how the machine works. (first)
6. If it's hot, the teacher will turn on the fan. (zero, first)
7. If you tell Meera you're going to Cornwall, she will want to go too. (first)

B. Complete the sentences with the correct passive form of the verb.

1. This book was written (write) by my favorite author.
2. In the future more endangered animals will be protected (protect) from hunters.
3. Today, more gas is being sold (sell) to other countries than before.
4. Petroleum is used (use) in thousands of everyday products.
5. Our new offices have not been built (build) yet.

C. Complete the sentences with words from the unit.

1. The moon orbits the earth.

2. Did you listen to the weather forecast this morning?

It's going to be very hot.

3. Geologist can use rock samples to help them find petroleum.

4. A hurricane is a very big storm that forms over warm water.

5. Some marine biologist work on boats so that they can study marine life far from land.

6. Petroleum is sent to a refinery to be changed into different petroleum products.

7. Satellite help us get TV programmes from many countries.

8. Rockets are used to launch satellites into space.

9. Meteorologist try to warn people if they know a big storm is coming.

10. I have a really bad memory and can't remember anyone's names!

D. Match the words that go together. Write the letters next to the numbers.

E. Read about Saturn and answer the questions.

1. What planet is larger than Saturn?

Jupiter is longer than Saturn.

2. What is Saturn made of?

It is mostly made of gases.

3. How is Saturn different from earth?

Saturn is much wider than earth and it is made of gases not rocks.

4. What are Saturn's rings made of?

Satur's rings are mostly ice with some small rocks.

5. Where do Saturn's moons orbit?

Most of them orbit at the edge of the rings but some of them orbit the rings.