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theluc95
2 năm trước
Cho hình thang ABCD (AB // CD) O là giao điểm của AC và DB.Dường thẳng qua O song song với AB cắt AD ở M.Chứng minh rằng: a) Tam giác OAB đồng dạng với tam giác OCD b) 1/OM = 1/AB + 1/CD
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1. By the time he came home, we ……………… A. are sleeping B.had slept C. slept D.have sleep 2. I watched movie after I …………….my homework. A. have completed B. complete C. had completed D. completed 3. My father ……..out before my sister arrived in the zoo . A. goes B. will go C. has gone D. had gone 4. I ………a little English before I went to Singapore. A. study B. had studied C. studied D. have studied 5. Alice ________ a Vietnamese until she met Nam. A. had never met B. has never met C. never met D. never meets 6. After we …………. lunch, we took a look around the shops. A. had had B. had C. have had D. have 7. Where ………. she ……..…… before she moved to Shanghai? A. did - live B. had - lived C. had - live D. has - lived 8. After I ……….. my teeth, I went to bed, A. have brushed B. had brushed C. brushed D. brush 9. Before my mother came home, my brother…………. food on the table. A. had prepared B. has prepared C. prepared D. was preparing 10. It was the first time I………..sushi. A. have eaten B. ate C. had eaten D. eat

Giúp mình với ạ!Giúp mình với ạ! 1. Yesterday, they (come) ………….. back home after they (finish) ………… their work. 2. She said that she ( meet) ……………………. Mr. Bean before. 3. Last night before he (go) ……………….. to bed, he (read) …………………… a novel. 4. When I came to the stadium, the match (start) ……………………………for a moment. 5. My father (not/ play) ……………………. any sports since last year. 6. Some people (attend) …………………….the meeting right now. 7. If I had a typewriter, I (type) ……………………. it myself. 8. He (live) ……………………. in Laos before he went to Vietnam. 9. After Hoa (eat) ……………………. the cake, she began to feel sick. 10. I (not drink) …………………….that wine if I (be) ……………………. you. 11. While the plumber (repair) ………………the dishwasher, I (watch) …………………the smartphone. 12. She said that she (already, see) .................................. Dr. Rice. 13. Yesterday, after he (take) ……………………. a bath, he (go) ......................... to bed. 14. He told me he (not/eat) ......................... such a kind of food before. 15. When he came to the station , the train (already/leave) ............................. 16. Yesterday, John (go) ....................... to the store before he (go) ....................... home. 17. She (win) ......................... the gold medal in 1986. 18. Our teacher (tell) ......................... us yesterday that he (visit) ......................... England before. 19. Before I (watch) ......................... TV, I had done my homework. 20. After I (wash) ......................... my clothes, I slept.

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