làm phần nào cũng được Choose the one word or phrase - a, b, c, or d - that best completes the sentences. 16. ______ more information, please telephone our main office. a. If you will need b. Should you need c. You should need d. If you needed 17. It's time governments ______ something to limit population growth. a. do b. did c. have done d. will do 18. I'd really like to do accounting. If only I ______ so poor at maths. a. am not b. weren't c. hadn't been d. wouldn't be 19. She wouldn't have gone to university ______. a. if her parents had insisted b. were her parents not insisted c. unless her parents had insisted d. only if her parents hadn't insisted 20. John said if he ______ any money he me a drink. a. has - will buy b. had - would have bought c. has had - would buy d. had had - would have bought 21. If it ______ more humid in the desert of the Southwest, the hot temperature would be unbearable. a. is b. would be c. were d. had been 22. If it keeps on raining, the basketball game ought ______. a. to postpone b. to be postponed c. postpone d. be postponed 23. Only if you get the theater early ______ a chance to get a ticket for tonight's performance. a. you will have b. have c. you have d. will you have 24. If she ______ sick, she would have gone out with me to the party. a. hasn't been b. wasn't c. weren't d. hadn't been 25. ______ been diverted, they would have arrived early. a. Had the plane not b. Hadn't the plane c. The plane had not d. The plane not had C. Identify the one underlined word or phrase - A, B, C or D - that must be changed for the sentence to be correct. 26. Mainly because of the recent health scares involving beef and A B chicken, the number of vegetarians are expected to rise dramatically C D in the next five years. 27. Rita asked me why didn't I ask for my money back if I was unhappy A B C D with my new car. 28. Do you have any view on whether young children should give A B C homework from school? D 29. If Rudy would have studied German in college, he would not have A B found the scientific terminology so difficult to understand. C D 30. The United States has a younger population as most other major A B C industrial countries. D