Exercises of Activity Book

First section

Vocabulary

1  Match the words.

1. Climate  3 change
2. Carbon  4 dioxide
3. Global  2 warming
4. Earth’s  1 atmosphere

2  Now fill in the blanks with the correct pairs.

(1) Climate chance is not the same as (2) global warming. Global warming means the temperature of the (3) Earth’s atmosphere goes up every day. We need (4) carbon dioxide in the atmosphere in order not to freeze. But now, we have too much carbon dioxide in the atmosphere, and that's making the Earth too warm; it is our fault.

Grammar

The Imperative (affirmative)

3  Underline the correct form of the verbs.

1. WaIk/Walks to school.
2. PIants/Plant trees in your garden.
3. Turns/Turn down the air conditioning and wears/wear cool clothes in summer.
4. Wears/Wear warm clothes in winter.
5. Turn off/Turns off your computer when you don't use it.
6. Brush/Brushes your teeth with the water tap off.

The Imperative (negative)

4  Underline the correct form of the verbs.

1. Don’t drive/Doesn't drive to work.
2. Do not pIay/Don't plays computer games all the time.
3. Doesn't throw away/Do not throw away used supermarket bags.
4. Do not Ieave/Does not leave the lights on when you leave a room.
5. Don’t take/Do not takes the bus; walk!

The Present Simple (adverbs of frequency)

5  Cross out the adverb in the wrong place.

1. My mother never drives never to work.
2. We always reuse always old paper at home.
3. My friends sometimes come sometimes to school by car.
4. I never remember never to turn off the lights.
5. My father sometimes cycles sometimes to work.
6. W friends and I never walk never to school.