I. Choose the correct answer
1. Students should learn some practical ways that help to _________ pollution.
A. save B. cure C. reduce
2. We will clean up the beach ______ it stops raining.
A. while B. as soon as C. during
3. Animals such as saolas and dugongs are _________ species.
A. dangerous B. dangered C. endangered
4. The sale on all video equipment ______________ on Monday next week.
A. started B. are starting C. starts
5. I went straight to the gym _____ I left home.
A. while B. before C. after
6. A _________________is a person who really likes going shopping.
A. farmer B. shopaholic C. customer
7.Con Dao National Park provides a rich _____for marine life.
A. habitat B. ecosystem C. environment
8. You can stay with us _____ you find a suitable place to stay.
A. as soon as B. before C. until
9. Alice doesn’t know how to __________ so she paid too much for her T-shirt.
A. ask B. bargain C. buy
10. We ______________ most of our grocery shopping at large supermarkets.
A. do B. does C. is doing
11. We should recycle various ____________products instead of throwing them away.
A. single-use B. cheap C. customer
12. Luckily, my hometown rarely suffers from __________, such as floods or storms.
A. habitat B. tornado C. natural disasters
13. We __________ money to help the earthquake victims last month.
A. donated B. donating C .were donating
14. While they _______________ near the river, the flood came suddenly.
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A. were camping B. camped C .are camping
15. Natural disasters can cause serious __________ to human life.
A. destroy B. flood C . damage
16. They lost all of their _________ because of the volcanic eruption.
A. emergency B. property C . damage
17. We cannot prevent natural disasters, but can _______ some of them.
A. damage B. destroy C. predict
18. ____________ trees and burning forests destroy a lot of wildlife habitats.
A. Watering B. Cleaning up C. Cutting down
19. We can ________________bargain at a supermaeket because the prices are fixed .
A. always B. never C. rarely
20.While my mother ________, she heard a warning about the coming storm.
A. was cooking B. cooked C. were cooking