I. STRESS
1. D. natural
2. D. understand
3. B. product
4. B. environment
5. D. approximate
II. Choose the suitable words or phrases to fill in the blanks.
1. B. compost
2. B. you passed
3. A. look for
4. D. reused
5. D. will be carried out
6. B. to swim
7. B. to seeing
8. C. is spoken
9. C. Instead of
10. B. deposit
