18. D
19. C
20. D (sửa câu trả lời là will be used mới đúng nha)
21. C
22. B
IV.
1. D
2. D
3. C
4. D
5. A
V.
28. C
29. A
30. C
31. B
32. A
VI.
33. A. works -> worked
34. C. fewer -> less
35. A. love -> loves
36. D. by -> on
VII.
37. Traffic rules should be obeyed strictly by road users.
38. If you don't be careful, you will fall off your bicycle.
39. It's about 300 km from Ho Chi Minh City to Phu Quoc Island.
40. Despite her age, she peforms exellently.
$\text{~ Chúc bạn học tốt ~}$
$\text{~ Nếu được thì cho mk trả lời hay nhất nha! ~}$