Exercises of Activity Book

Second section

Grammar

The Imperative (affirmative)

1  Complete the instructions for this experiment with the correct form of these verbs. Two words are used more than once.

Science Experiment:

The purpose of this experiment is to show how pollution spoils our ground, our water and our food.

1. Get glass of water, red ink and a stalk of celery.
2. Add several drops of red ink to the water in the glass.
3. Place the celery stalk in the glass.
4. Look at the changes in the celery stalk during the school day.
5. Write your observations.
6. At the end of the school day, take the stalk out of the water.
7. Cut an inch off the bottom of the stalk.
8. Look at both ends of the stalk.
9. Write what you see.

The Imperative (negative)

2  Make sentences about what you mustn't do in order to save our planet.

1. to / ask / your / to / Don't / you / school! / dad / drive

Don't ask your dad to drive you to school!

2. when / Don't / leave / water / you / teeth! / your / the / brush / running

Don't leave the water running when you brush your teeth!

3. leave / the / on / time! / Don't / the / computer / all

Don't leave the computer on all the time!

4. old / throw / your / away / toys! / Don't

Don't throw away your old toys!

5. need! / buy / things / you / Don’t/ don't

Don't buy things you don't need!

The Imperative (affirmative and negative)

3  Fill in the recycling instructions with the correct form of these verbs. One word is used more than once.

How to recycle glass

1. Check your local recycling programmes for the type of glass to recycle.
2. Rinse and recycle bottle glass of any colour.
3. Don’t put in any broken glass.

How to recycle aluminium.

4. Find where to recycle aluminium.
5. Rinse and place aluminium cans, caps and lids in the same recycle bin.
6. Don’t recycle cans containing dangerous materials.

The Present Simple (affirmative, negative and interrogative)

4 Use the words in brackets to complete the questions. Then answer the questions.

1. (people / cause) global warming?

Do people cause global warming?

Yes, they do.

2. (you / reuse) paper cups?

Students’ own answer.

3. (your father / drive) to work every day?

Students’ own answer.

4. How often (you / cycle) to school?

Students’ own answer.

5. What (your family / recycle)?

Students’ own answer.

5 Complete this text with the correct form of the verbs in brackets.

Climate (1) is a sort of "machine". The weather (2) is a small part of this machine, but it's what you and I (3) notice: a storm, a drought, very hot weather or very cold weather. The sun (4) makes this possible. It (5) warms the air. Hot air (6) rises, (7) expands and (8) makes clouds and eventually rain.

The Present Simple and Adverbs of Frequency

6 use these words to write sentences. Put the adverb in the correct place.

1. my / floods / never / in / happen / country /. Fluasn-vrun-n'n n o ‘r

Floods never happen in my country.

2. throws / My / always / mother / away / my / sister's /. / baby / nappies

My mother always throws away my baby sister's nappies.

3. to / sometimes / We / the / centres / to / glass /. / recycle / go / recycling

We sometimes go to the recycling centres to recycle glass.

4. usually / At / we / recycle / . / home. / junk / mail

At home, we usually recycle junk mail.

5. aluminium / his / friend / and / often / cans /. / family / My / Ahmad / recycle

My friend Ahmad and his family often recycle aluminium cans.

7 Write questions and answer them. Use the adverbs of frequency sometimes, never or always.

1. How often / you / reuse envelopes?

How often do you reuse envelops?

I always reuse envelops

2. How often / your sister / give away old toys?

How often does your sister give away old toys?

3. How often / your family/ recycle glass?

How often does your family recycle glass?

4. How often / your teacher / throw away junk mail?

How often does your teacher throw away junk mail?

5. How often /you and your classmates / turn off your computers when you leave the room?

How often do you and your classmates turn off your computers when you leave the room?

8 Write hve sentences about the things you, your family and your friends do to save the planet. Use one of the adverbs in the box in every sentence.

Example sentences:

My sister often turns off the water when she brushes her teeth. i never do. My brother always cycles to work. My family usually recycles glass bottles. My friend Saima sometimes turns the computer off when she is not using it. My father never goes on holiday by plane.

9 In your notebook, ask and answer questions about Abla and Saleem using How often ...?

Example answers:

How often does Abla play computer games? She never plays computer games. How often does Saleem turn off the water while brushing his teeth? He always turns off the, water while brushing his teeth. How often does Abla recycle aluminium cans? She sometimes recycles aluminium cans.

10 Are Abla and Saleem good weather warriors? Why? What about you? Write three sentences.

Example answers:

Abla is a good weather warrior because she often turns off the water while brushing her teeth, she always wears cool clothes in summer and turns off the air conditioning in summer. Saleem is a good weather warrior because he always recycles tin cans, always turns off the water while brushing his teeth and always turns off the air conditioning in summer. I (Students’ own answer)

Vocabulary Corner 

11 Read the clues 1-5 and write the words vertically in the puzzle. You are given the first letter.

1. To turn into ice FREEZE
2. The weather conditions of a place CLIMATE
3. The Earth's temperature keeps going up GLOBALWARMING
4. The gases surrounding the Earth ATMOSPHERE
5. The degree of heat in the atmosphere TEMPERATURE

12 Read horizontally the word for number 6. Write Its clue.

ENVIRONMENT