UNIT 11 : NATIONAL PARKS
< I >: A. Choose the word whose underlined part is pronounced differently from the others:
1. a. nation b. cave c. locate d. park
2. a. explore b. tropical c. orphan d. transport
3. a. toxic b. tourist c. feature d. threaten
4. a. established b. orphaned c. recognized d. endangered
5. a. threaten b. ethnic c. together d. southeast
B. Choose the word whose main stress is placed differently from the others:
6. a. establish b. butterfly c. orphanage d. national
7. a. variety b. recognize c. contaminate d. abandoned
8. a. expensive b. tropical c. release d. survival
9. a. toxic b. ethnic c. explore d. threaten
10. a. polluted b. dangerous c. comfortable d. temperate
< II >: Complete the sentences with the correct form of the verbs in the box:
locate establish orphan abandon contaminate
explore release defeat contain endanger

1. There is a danger of serious _____________ from radioactive waste.
2. The giant panda is in danger of becoming extinct. It is an _____________ species.
3. Cuc Phuong National Park is _____________ 160 km South West of Ha Noi.
4. He wants _____________ how the human brain will function under these circumstances.
5. He has been _____________ since he was five.
6. The enemy was _____________ in a decisive battle.
7. His mother _____________ him when he was five days old.
8. The board agreed _____________ two committees to examine the proposals.
9. Toxic gases from industrial factories were _____________ into the atmosphere.
10. Brown rice _____________ a lot of vitamins and minerals.
< III >: Choose the correct preposition:
1. Tourists go to Cuc Phuong National Park to look at/ for the 1,000-year-old tree.
2. He left school to take care of/ on his sick mother.
3. Do you belong in/ to any campus clubs or organizations?

happen).
10. If you ___________ (tell) me you needed money, I ___________ (can/ lend) you some.
< V >: Write a sentence with if for each situation.
1. He didn’t prepare for the interview, so he didn’t get the job.
- If he had prepared for the interview, he would have got the job.
2. We came home from our holiday early because we ran out of money.
-……………………………………………………………………………………………………..
3. I can’t take much exercise because I don’t have enough free time.
-……………………………………………………………………………………………………..
4. The house didn’t burn down because the fire brigade came immediately.
-……………………………………………………………………………………………………..
5. The men were wearing protective clothing, so they were all quite safe.
-……………………………………………………………………………………………………..
6. People don’t realise how important it is to conserve energy, so they do nothing about it.
-……………………………………………………………………………………………………..
7. I took the job because I didn’t know how difficult it was.
-……………………………………………………………………………………………………..
8. My father didn’t earn much money, so life wasn’t easy for us.
-……………………………………………………………………………………………………..
9. Daniel really wanted to buy the book, but he didn’t have enough money.
-……………………………………………………………………………………………………..
10. There isn’t any truth in her allegations, so I won’t resign.
-……………………………………………………………………………………………………..
11. Andrew wanted to ask Frank Sinatra for his autograph, but he wasn’t brave enough.
-……………………………………………………………………………………………………..
12. I don’t know anything about plumbing, so I can’t fix the leak in the sink myself.
-……………………………………………………………………………………………………..
< VI >: Make the correct choice :
1. Of the six people in the plane when it crashed, only one _____.
a. existed b. lived c. hurt d. survived

a. in case b. if c. otherwise d. unless
14. If you _____ us about the bad service, we’d have eaten there.
a. didn’t tell b. wouldn’t have told c. hadn’t told d. had told
15. Diana is a wonderful ballet dancer. She _____ since she was four.
a. has been dancing b. has been danced c. has danced d. was danced
16. The door was locked _____.
a. five minutes ago by Ann b. with Ann five minutes ago
c. by Ann five minutes ago d. in five minutes ago by Ann
17. It would have been a much more serious accident _____ fast at the time.
a. was she driving b. she had driven
c. had she been driving d. if she drove
18. Do you think there would be less conflict in the world if all people ____ the same language ?
a. speak b. will speak c. spoke d. had spoken
19. The teacher was absent today, so class was canceled. If she _____ absent again tomorrow,
class _____ tomorrow, too.
a. is/ will cancel b. is/ will be canceled
c. was/ would be canceled d. was/ would cancel
20. Hundreds of species of Hawaiian flowers have become extinct or rare _____ extensive land
development.
a. now that b. due to c. because d. for
21. Marge’s children are used to _____ after school every day. They don’t have to walk home.
a. picking up b. being picked up c. be picked up d. pick up
22. You’ll _____.
a. be met by my uncle at the airport b. meet at the airport by my uncle
c. being met by my uncle at the airport d. be met at the airport by my uncle
23. If I wasn’t working for an accounting firm, I _____ in a bank.
a. had worked b. will work c. would have worked d. would be working
24. If you _____ to my advice in the first place, you _____ in this mess right now.
a. listen/ won’t be b. listened/ wouldn’t have been
c. will listened/ wouldn’t be d. had listened/ wouldn’t be

Mount Rainer, the heart of Mt. Rainier National Park, is the highest mountain in the state of
Washington and in the Cascade (1) _____. The mountain’s summit is broad and rounded. It is
14,410 feet (2) _____ sea level and has an area of about one square mile. Numerous steam and
gas jets occur (3) _____ the crater, but the volcano has been sleeping for many centuries.
Mount Rainer has a permanent ice cap and (4) _____ snow fields, which give rise to more
than forty glaciers. These feed swift streams and tumbling waterfalls that race (5) _____ the glacial
valleys. Forests extend to 4,500 feet. There are alpine meadows between the glaciers and the
forests, which (6) _____ beautiful wild flowers. The Nisqually Glacier is probably the ice region that
is most often (7) _____ by visitors. Paradise Valley, (8) _____ hotel accommodations are available,
perches (9) _____ the mountains slope at 5,400 feet. The Wonderland Trail encircles the
mountain. (10) _____ 90-mile length can be covered in about a week’s time.
1. a. Range b. Park c. Mount d. Area
2. a. on b. above c. from d. over
3. a. on b. in c. through d. around
4. a. extend b. extended c. extensive d. extensible
5. a. to b. into c. through d. down
6. a. contain b. include c. combine d. cover
7. a. attracted b. traveled c. established d. explored
8. a. which b. where c. whose d. there
9. a. on b. at c. in d. along
10. a. It’s b. This c. Their d. Its
< IX >: Build each sentence with the words provided:
Dear Mr. Black!
1. Thank you / letter / I receive / this morning.
-……………………………………………………………………………………………………..
2. Thank you / invite me / come / interview / Tuesday next week.
-……………………………………………………………………………………………………..
3. Unfortunately / I / not able / attend / time / suggested.
-……………………………………………………………………………………………………..
4. Be / possible / rearrange / interview / Wednesday morning.