36. went / had cleaned
37. went / stayed
38. was waiting / arrived
(hoặc: had been waiting/arrived nếu bạn muốn nhấn mạnh vào hành động bạn mình vẫn đang ngồi chờ mình ở đó)
39. was
40. bought
41. was writing / broke
42. arrived / had / went
43. Did you visit
44. was reading / was preparing
45. got / had gone
46. smoked
47. was not (hoặc wasn't)
48. Was he eating
49. Did Guillermo call
50. were planting
51. were doing
52. watched / had done
53. went / were having
54. was not driving / happened (hoặc: wasn't driving / happened)
55. was working