15. A. If she weren't too weak, she could sit up and talk to you.
16. B. If we save water, we won’t have to suffer from the shortage.
17. A. Unless we can prevent it in advance, the hurricane will destroy the coastal towns.
18. D. Unless there is enough rain, the hydropower station can't operate.
19. D. Both B and C
20. B. If no one has a key, we can't get into the house.
(If not = Unless)
READING
Chọn từ thích hợp nhất (ứng với A hoặc B,C,D) để điền vào chỗ trống trong đoạn văn sau, từ câu 36 đến câu 40.
36. B. hours (chờ xe buýt thì từ vài phút đến vài giờ là hợp lí)
37. A. complain (complain about sth: than phiền về cái gì)
38. D. reduces (vì pollution không hoàn toàn bị loại bỏ nên dùng ''reduce'' mang nghĩa làm giảm)
23. D. how my father was (câu tường thuật thì lùi thì + động từ nằm sau chủ ngữ)
24. A. whether he preferred (câu hỏi lựa chọn dùng whether)
25. B. where I had spent / the previous year (lùi thì, last year => the previous year)
III. Conditional sentences.
1. C. closed
2. B. calls
3. D. would have been
4. B. have
5. C. would
6. B. would understand
7. D. would have gone
8. D. would have made
9. C. she had driven
10. B. unless
11. C. If you had told me the story, I could have helped you.
12. D. If he studied hard, he wouldn't fail the examination.
13. A. If Mary hadn't drunk too much wine. she wouldn't have felt sick.
Câu ĐK loại 1: 2, 4
Câu ĐK loại 2: 1, 5, 6, 12
Câu ĐK loại 3: 3, 7, 8, 9, 10, 13
25. D. to get / to go
The first/ lasy + to infinitive
II. REPORTED SPEECH
1. D. What that word meant
2. B. not to behave (tell sb to do sth)
3. A. would
4. B. was
5. A. is
6. C. to pass / would be trying
7. C. the day before (yesterday lùi thành the day before)
8. D. If I was (trong câu hỏi yes/no thì do đổi thành if)
9. A. will tell
10. C. If I had seen
11. B. before (ago => before)
12. D. he had to go then (now => then)
13. A. to stop talking (tell sb to do sth: yêu cầu ai làm gì)
14. D. had been very tired the night before
15. C. would go / the next day (tomorrow => the next day)
16. D. not to play
17. B. where her umbrella was
18. C. who had given
19. D. had gone
20. A. if we had been going
21. C. if I knew / who Robert was
22. B. where he had been
Vì là reported speech nên tất cả các câu trên đều có lùi thì.
