19. Linda: Excuse me. Where's the post office? Maria: ................... A. It's over there B. I'm afraid not. C. Don't worry. D. Yes, I think so. 20. I think you ................study hard for the next exam. A. could B. will C. would D. should 21. The life ......... of sperm whale can be up to seventy years. A. distance B. period C. length D. span 22. Without plants, most of water would ............................as soon as it falls. A. run off B. run after C. run away D. run by 23. If Lan had worn a rain coat, she ............... a cold 2 / 3 A. had got B. wouldn't get C. won't get D. wouldn't have got 24. I still can't believe it! My bicycle................ last night. A. was stealing B. stolen C. was stolen D. stole 25. It rained all the time, ................was a great pity. A. that B. what C. which D. who 26. By the end of last summer, the farmers .............all the crop. A. harvested B. had harvested C. harvest D. are harvested 27. They had to think of some other ways of bettering their lives A. improving B. killing C. worsening D. cutting 28. The farmer removed some undeveloped trees to improve the growth of the rest. A. planted B. watered C. eliminated D. fertilized 29. Deforestation is destroying large areas of tropical rain forest. A. changing B. raising C. becoming D. damaging 30. We visited the Nairobi National Park and enjoyed different species of fauna. A. zoo B. animal C. flowers D. plant