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

làm hộ em ý C ạ em ko biết làm huhu

Các bạn ơi giúp mình với Ai làm được mình đánh giá 5 sao cho

230. We ……….. (not live) in England for the last two years. 231. He ……….. (not arrive) when I ……….. (write) my last letter to you. 232. I never ……….. (forget) what you just ……….. (tell) me. 233.They ………….. (prepare) the Christmas dinner today. 234. When I last ………. (stay) in Cairo, I …………. (ride) to the Pyramids on a camel that my friend ……..(borrow) the day before. 235. He knew that I ……….. (come) the following week. 236. She understood that we ………… (promise) to go. 237. I ……….. (be) pleased if he came. 238. I was taught that the sun ………… (be) bigger than the moon. 239. The boy knew that an hour …………. (have) sixty minutes. 240. I didn‟t know what time it ……….. (be), so I ……….. (turn) on the radio.

M.n giúp em vs ạ😊😊 Cho 2 đường thẳng yt và xz cắt nhau tại O.Biết góc xÔy - yÔz = 20°.Tính các góc còn lại.. lu mọi người nhiều lắm

201. He ( have) ………… an argument with his boss, so he decided to resign. 202. You’d better tell the truth now, you (lie)…………… so often. 203. She wanted to help sick children so she [train]……………as a nurse. 204. He was fed up and that’s why he [give]…………….up working for them. 205.They had been charged with bugging his flat but they [deny) ………….. all the allegations last week. 206. At last we [let]………….him drop his evening classes. 207. I [not hear]………….the telephone because we were having an early evening drink on the terrace. 208.Up to now, I _____ (never see) such a fat man. 209.Up to then, I _____ (never see) such a fat man. 210.It’s the first time I _____ (eat) this.

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191. Who is this lady? She (move)…………… into No 4 last month. 192. This hotel is empty, it (not live)……………. in for a long time. 193. What a pity! We‟ve got a bottle of wine but we ( not bring)………….. a corkscrew. 194. They were very busy because a water pipe (leak) ………….. . 195. He (can not)……………. get the lid off so he lost his temper. 196. Yesterday afternoon he (have)…………… a nap in the garden chair when a boy dropped a ball on his head. 197. It was her birthday so he (buy)…………… her a bunch of flowers. 198. He was looking at a map so he (not notice)………….that the car in front of him had stopped at the traffic lights. 199. He was running fast and he (bump)…………….. into an absent-minded old man. 200. We didn’t do the shopping because we (not have) ………….. time.

làm nhanh và chính xác giúp e với ạ đủ hai tiêu chuẩn vote 5 sao và câu trả lời hay nhất

tính giá trị của biểu thức bằng cách hợp lý b)B=x^6-20x^5-20x^4-20x^3-20x^2-20x+3 tại x=21 *gợi ý:vì x=21 nên x-1=20