IV. Choose the best answer to each of the following sentences.

1. We should use reusable water bottles ______ of plastic ones.

A. because B. instead C. despite D. however

2. Walking to school helps ______ air pollution.

A. remain B. reuse C. recycle D. reduce

3. We should go to school by bike to ______ the energy.

A. save B. protect C. pollute D. spray

4. The prefix “re” in the word “reuse” means ______.

A. again B. none C. for D. against

5. One of the bad things about ______ is that it can make fish die.

A. noise pollution B. soil pollution C. water pollution D. air pollution

6. We should find creative ways to reuse old items before ______ them away.

A. breathing B. washing C. hearing D. throwing

7. ______ anything happen, remember to call the police.

A. Should B. If C. In case D. Unless

8. The town won’t flood ______ there is a downpour.

A. if B. provided C. unless D. should

9. If the weather ______ good, Linh ______ out with us.

A. is – goes B. will be – goes C. is – will go D. will be – will go

10. The bear ______ if you ______ it.

A. attacks –provoke

B. will attack –provoke
C. attacks – will provoke

D. will attack – will provoke

V. Give the correct form of the word in brackets to complete the sentences.

1. Police are investigating the ____________ of a young woman. (APPEAR)

2. Concern over global warming has not led to a ____________ in the use of oil and gas.

(REDUCE)

3. He knew I was ____________ and dynamic and would get things done. (ENERGY)

4. The shop windows were lit ____________, tempting the late shoppers. (INVITE)

5. He had all the fences around his home ____________. (ELECTRICITY)

6. My pen seems to be running out of ink - I need a ____________. (REFILLABLE)

7. The local council have just set up a committee to study ____________. (RECYCLE)

8. We are following up the reduction of smoke by controlling other airborne

____________. (POLLUTE)

9. Two thirds of the region has been ____________ in the past decade. (FOREST)

10. She hopes to be the first woman elected to the ____________ of the United States.

(PRESIDENT)

VI. Rewrite these sentences to form first, second, third or mixed conditionals.

1. You’re unfit because you don’t do enough exercise.

2. I got angry because he was rude to me.

3. I might go to live in Australia but I’ll have to find a job first.

4. I’m not a good cook, so I didn’t invite them to lunch last Sunday.

5. I didn't take the job and I'm not a millionaire now.

6. We’re not sitting outside because it’s raining.

7. He’s feeling ill because he ate too much.

8. You didn’t hear what I said because you weren’t listening.

9. We trust him so we didn’t sack him months ago.

10. You only know about this because I told you.

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