Reading comprehension. A. Pollution We are slowly (1)______the seas and are (2)______dirty to swim in. There is so much smoke in the air is (3)_____to live in many of the world `s cities. In one well – known city, for example, (4)_____gases from cars pollute the air so much that traffic policemen (5)_____wear oxygen masks . We have cut (6)_____ so many trees that there are now vast areas of wasteland all over the world. As a result, farmers in part of Africa can`t grow (7)_____to eat . In certain countries in Asia there is too little rice . Moreover, we do not take enough care of the countriside. Wild animals are quickly(8)_____. For instance, tigers are rare in India now because we have killed too many for them to survive. We must act now before it is too (9)_____to do anything about us. Join us now . Save the earth. It is (10)_____important to ignore. 1. a. destroy b. destroyed c. destroying d. to destroy 2. a. so b. so that c. very d. too 3. a. healthy b. unhealthy c. healthful d. healthily 4. a. poisonous b. poison c. poisonously d. poisoned 5. a. have to b. may c. should d. will 6. a. down b. up c. off d. into 7. a. much b. enough c. many d. a lot 8. a. disappeared b. disappear c. disappearing d. disappear 9. a. lately b. later c. latest d. late 10. a. so b. swo that c. too d. very