1 Tom said he wanted to buy a pocket calculator for his father2 She said she had once spent a summer in that village3 The nurse told the docter the patient in that room hadn't obey the his order4 They told me I had taught them English the year before5 Mr. Brown said their trip cost them 2 thousand dollarsV1 After David had gone home, we arrived2 Before we took a look around the shop, we had had lunch3 When we got out of the office, the light had gone out4 By the time we started our work, she had explained everything dearly5 Before my mother came home, my father had watered all the plants in the gardenVI2 is it3 aren't you4 didn't she5 did he6 don't they7 hasn't he8 isn't it9 will he10 didn't heCâu trả lời: 1 Tom said he wanted to buy a pocket calculator for his father2 She said she had once spent a summer in that village3 The nurse told the docter the patient in that room hadn't obey the his order4 They told me I had taught them English the year before5 Mr. Brown said their trip cost them 2 thousand dollarsV1 After David had gone home, we arrived2 Before we took a look around the shop, we had had lunch3 When we got out of the office, the light had gone out4 By the time we started our work, she had explained everything dearly5 Before my mother came home, my father had watered all the plants in the gardenVI2 is it3 aren't you4 didn't she5 did he6 don't they7 hasn't he8 isn't it9 will he10 didn't he