Doc doan van:

Water is our life soucre. It makes up seventy percent of our bodies, and the average person actually...(1)...eighteen months ih the bath or shower.

However, it is till now that we are learning how to...(2)...water. Acid rain has polluted as many as 18000 lakes and our seas and rivers are polluted..(3)...waste products. It is now very ecpensive to repair the damage...(4)...has been caused. However, we have some hope for the future. New sources of water have been discovered in parts of the world...(5)...we have learnt something from our mistakes, we will have to try to keep our new sources clean

1. A. takes B. gets C. has D. spends

2. A. look after B. look over C. turn over D. turn up

3. A. in B. with C. from D. under

4. A. this B. whose C. that D. where

5. A. although B. moreover C. if D. unless

1. The longest fish in the contest was eighteen inches long". "It_____ by Thelma Rivers". a. was catching b. caught c. was caught d. catch 2. "I heard you decided to take up tennis". "Yes, I have_____ every day". a. been played b. been playing c. playing d. play 3. "Are we about to have dinner?". "Yes, it _____ in the dinning room". a. is serving b. serves c. is being served d. served 4. "Why is Stanley in jail?" "He_____ of robbery". a. has been convicted b. has been convicting c. has convicted d. convicted 5. "Where are Jack and Jan?" "They_____ the boxes you asked for into the house". a. have been bringing b. bringing c. have been brought d. to bring 6. "Where's the old chicken coop?" "It_____ by a windstorm last year". a. destroy b. is destroyed c. was destroyed d. destroyed 7. "We're still looking for Thomas". "Hasn't he_____ yet?". a. been found b. to find c. found d. being found 8. "Whatever happened t that fortune - teller?" "I don't know. She _____ around her in a long time". a. hasn't seen b. didn't see c. hasn't been seeing d. hasn't been seen 9. "Diana is a wonderful ballet dancer". "She_____ since she was four". a. has been dancing b. has been danced c. is dancing d. was danced 10. "What a beautiful dress you're wearing!" "Thank you. It_____ especially for me by a French tailor". a. is made b. has made c. made d. was made 11. "Those eggs of different colors are very artistic". "Yes, they_____ in Russia". a. were painted b. were paint c. were painting d. painted 12. "Homer is in jail for smoking marijuana". "He_____ that it was against the law". a. is telling b. was told c. old d. tells 13. "The maintenance people didn't remove the chairs from the ballroom". "Don't worry. They _____ them before the dance begins". a. will have been moved b. will have moved c. were moved d. moved 14. Gold_____ in California in the nineteenth century. a. was discovered b. has been discovered c. was discover d. they discovered 15. _____ that military spending is extremely high. a. We are felt b. It feels c. It is felt d. We feel that it is 16. All planes_____ before departure. a. will checked b. will has checked c. will be checked d. will been checked 17. I wanted_____ by the head of the company, but it was impossible. a. to see b. to be seen c. seeing d. being to see 18. Katherine_____ at Bob's house every night this week. a. has been eaten b. has eating c. is being eating d. has been eating 19. "Where did you get these old dresses?". "We_____ them in the old trunk". a. were found b. finding c. found d. have been found 20. "What happened to the old mail carrier?" "He_____ to a new neighborhood to work". a. has sent b. was send c. was sent d. sent