V. Each of the following sentences has one mistake. Identify the mistake by wrting the letter A, B, C, or D on the answer sheet and correct it.

34. C. was used to -> used to

=> used to + V-infi: đã từng

35. D. doesn't he -> isn't he

=> Câu hỏi đuôi: Mệnh đề là "is" -> phần đuôi là 'isn't'

36. B. did i go to school -> i went to school

=> S1 + asked + O + wh-qs + S2 + V lùi 1 thì

37. A. won't -> don't

=> Câu điều kiện loại 1: If + HTĐ, TLĐ

38. C. when -> since

=> since + mốc thời gian: từ khi..

VI. Complete the sentences using word cues.

39. Ba wants to learn how to speak English well 

=> Ba muốn học cách nói tiếng Anh tốt

40. My mother used to work hard on the farm when she was young

=> Mẹ tôi đã từng làm việc chăm chỉ trên những cánh đồng khi bà còn nhỏ