241. I wondered whether I …………. (lock) the door or not. 242. She says that she ……….. (live) in the country when she ……….. (be) a child. 243. The teacher said that the shortest distance between two points ……….. (be) a straight line. 244. They hoped that they ………… (end) soon. 245. When the teacher came in, the pupil ………. (play). 246. Columbus …………. (discover) America more than 400 years ago. 247. Yesterday, while I ……….. (write) a letter, the telephone ………. (ring). 248. Bill said he ………. (forget) to buy a new dictionary. 249. Kite and I ……….. (wait) right here until you ………… (get) back. 250. Helen regretted that she ………. (not can) go with us. 251. I already ……….. (ask) you three times for a glass of water. 252. He ………. (leave) as soon as he ……… (hear) the news last night. 253. I opened the door just as my boy-friend Tom ……….. (ring) the bell. 254. We ……….. (not see) Mr. and Mrs. Baker for a long time. 255. It will soon be fifteen years since we …….. (come) to live in Ho Chi Minh city. 256. Until she spoke I ……… (not realize) she ……… (be) foreign. 257. Don’t leave till I ………. (arrive). 258. When your father ……… (die)? ~ I ………. (not know) when he ……… (die). 259. It …….. (rain) when we arrived. 260. Dick ………..(start) school before he ………. (be) seven. còn 10 điểm cuối cùng giúp mk với ạ