31. A - include
cần một động từ thường để thành câu hoàn chỉnh
32. A - discovery [n] phát hiện
33. C - will destroy
Câu điều kiện loại I; If S V(HTĐ), S will/may/can Vnt
34. D - affect
35. D - growth rate
36. A The exam result might be announced next week
37. B My headache was getting worse and worse, so I took an aspirin
38. B She left the classroom when she saw he was so angry
39. C when was this beautiful city built
40. D the plane was unable to land because of the thick fog
be unable to : không thể
