37. Was visiting - was going
38. were having
39. were talking - came
40. called - was buying
41. was paying - heard
42. Was your student playing soccer at that time ?
43. were playing - were playing
44. was taking - looked
45. was walking - felt - didn't know
46. dropped - was doing - wasn't be broken ( bị động )
47. met - was studying
48. waited
49. arrived - was talking
50. was walking - attacked
51. was living
52. was staying
53. were sleeping - knocked
54. were playing
55. didn't meet - was walking
56. what were you writing when your computer crashed ?
57, 58 mình không biết chia quá khứ với quá khứ tiếp diễn bạn nhé. Câu đó mình chia hiện tại
