I. From each number, pick out one word which has the stress on the first syllable

1. D. average 

2. A. chemical

3. C. variety 

4. B. population

5. D. identify

II. Choose the word or the phrase or sentence that best completes each unfinished sentences below ...

1. D. having

2. C. taking

3. C. cut off

4. D. at

5. A. about

6. C. conserving 

7. D. beautifully

8. B. or

9. C. go on

10. B. turn off

III. Rewrite these sentences by using "because/so"

1. He was very busy so he couldn't meet you.

2. She was sick so she went to bed early.

3. The weather was lovely so we spent the whole day in the garden.

4. I can't play volleyball because I'm short 

5. We can't swim in this part of the river because the water is very polluted.

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