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hongngoc2004
2 năm trước
giúp mình với 10h mình phải nộp rồi ! Nhanh nhất mình sẽ đánh giá 5* nhaa Hoà tan hoàn toàn 2,72 gam hỗn hợp X gồm Fe, Mg, Cu bằng một lượng vừa đủ H2SO4 loãng thấy thoát 1,568 lít H2 ở đktc, dung dịch Y cùng 0,64 gam chất rắn không tan. a. Tính phần trăm khối lượng của các chất trong hỗn hợp X b. Tính khối lượng muối thu được sau phản ứng
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1. I'll have the boys______ the chairs. a. paint b. to paint c. painted d. painting 2. I am going to have a new house______. a. build b. to build c. built d. building 3. Have these flowers______ to her office, please. a. taken b. taking c. take d. to take 4. You should have your car______ before going. a. servicing b. to service c. service d. serviced 5. I'll have a new dress______ for my daughter. a. making b. to make c. make d. made 6. Pupils should have their eyes______ regularly. a. tested b. to test c. test d. testing 7. Lisa had the roof______ yesterday. a. repair b. repaired c. to repair d. repairing 8. They have just had air conditioning______ in their house. a. install b. to install c. installed d. installing 9. We had the room______ yesterday. a. decorates b. had decorated c. decorated d. decorating 10. The villagers have had the use of this washing machine______ by this engineer. a. explain b. explained c. to explain d. explains 11. By______ the housework done, we have time to further our studies. a. taking b. to have c. having d. to get 12. The government has had new houses______ in the rural areas. a. build b. built c. to be built d. building 13. She is going to have her wedding dress______. a. cutting b. cuts c. cut d. to cut 14. It's about time you had your house______. a. whitewash b. whitewashed c. whitewashing d. to whitewash 15. I'm sorry I'm late, but I______ my watch______ on the way here. a. have/ cleaned b. had/ clean c. had/ cleaned d. had/ to clean 16. Please have the cleaner______ this meeting room. a. sweep b. swept c. sweeping d. to sweep 17. I'd like to have my shoes______ at one. a. repair b. repairing c. repaired d. being repaired 18. My grandmother had a tooth______ last week. a. fill b. filling c. filled d. to be filled 19. We had the roof______ last year. a. mend b. mending c. mended d. being mended 20. I have had my room______ today. a. clean b. cleaning c. cleaned d. being cleaned GHI LUÔN CÂU GIẢI THÍCH NỮA NHA KHÔNG GHI T BÁO CÁO ĐẤY

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