1a

2c

3b

4e

5d

Listen again and give short answers to the following questions. Use no more than THREE words.

1. What is the listening text about?

Water pollution

2. How many sources of water pollution are there?

Two

3. What are two common sources of drinking water?

Rivers and lakes

4. What type of effect does water pollution have on our life?

A harmful effect

5. What products can we use to reduce water pollution?

Green products

1. Polluted water is unsafe for drinking / cooking and for other uses.

2. Sometimes toxic substances flow into rivers from factories / hospitals.

3. Water pollution has a dangerous / harmful effect on our life.

4. We couldn't / shouldn't throw litter into rivers and lakes.

1b - 2d - 3e - 4c - 5a

Choose A, B, or C to complete each sentence.

1. I was not at home _____ he came to see me yesterday.

A. when                         B. until                                C. as soon as

2. We called the forest guard unit _____ we saw the bush fire.

A. as soon as                B. while                              C. until

3. I went straight to the gym _____ I left home.

A. while                         B. before                            C. after

4. You can stay with us _____ you find a suitable place to stay.

A. as soon as                B. before                            C. until

5. We cleaned up everything at the campsite _____ we left.

A. until                           B. before                           C. while

Read the sentences and write I.C if the underlined clause is an independent clause or D.C if it is a dependent clause.

Example:

You must be careful when you cross the street.  D.C

1. I'll wait for you here until you get back. _I.C__

2. Make sure you lock the door when you go out. _D.C__

3. You must get a permit before you build a campfire at a national park. __I.C_

4. Dont use too much water while you are having a shower. _D.C__

5. As soon as my friends come, we will pick up rubbish on the beach. _I.C__

1e

2a

3c

4b

5d

/bl/: black, block, blue, blew, blast

/kl/: clouds, club, classroom, clock, cleaned