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làm vận dụng cho mình nhé m k hủy câu b và c nếu mấy bn có thể nói sơ qua thì mình cảm ơn ạ

1.he(cross) ............................the street when i (see)....... him yesterday . 2. he(leave)................home 2 weeks ago and we (not hear)............from him since 3.what .......you(do)........ at that time last week ? 4.last sunday,an(watch).................tv when tom (come)..........here 5.john(do).................his homework already 6.yesterday while i(water)..................the garden ,it(begin).........to rain 7.he (read).................53 pages so far 8................he(write).................a novel at present? 9.they(not speak)........................to each other since thay quarreled 10.listen!somebody(knock)...........................the door 11. please don't say anything while i(learn)...................my lesson 12.up to now,i(do)........................every exercise in this book 13.mrs green(take)....................alice to the dentist's many times 14

Cho 40ml dd HCl 0,75M vào 160ml dd chứa đồng thời Ba(OH)2 0,08M vào KOH 0,04M. Tính pH của dd thu được, cho biết [H+] × [OH-] = 10^-14 giúp mình với ạ

Circle the best option A, B, C or D to complete the sentences: 8. The_________growth rate of Vietnam reached about 8.0% in 2007. A. economics B. economically C. economical D. economy 9. I came ..................an old friend while I was walking along the street. A. across B. into C. over D. for 10. Sarah has to stay in bed for a few days _________ she is sick. A. because B. and C. but D. although 11. Mathew studied Physics _________ England from 2002 to 2006. A. at B. about C. in D. on 13. It’s very late. We suggest _________ a taxi to get to the airport. A. catch B. catching C. to catch D. caught 14. Environmental _________ is a serious problem facing mankind today. A. pollute B. polluted C. pollution D. polluting 15. Your brother passed the final exam, _________? A. does he B. doesn’t he C. did he D. didn’t he 16. Jennifer Aniston, _________ is perhaps best known for her role in “Friends”, has also appeared in several major films. A. that B. who C. whom D. which Mark the letter to indicate the most suitable response 17. Daughter: “Dad! I have just won the first prize in the Olympic English Contest.” Father: “__________________” A. Congratulations! B. That’s a good idea. C. Thank you. D. I’d love to. 18. Peter: “Don’t fail to send your parents my regards.” Susan: “_____.” A. You’re welcome. B. Thanks, I will. C. Good ideas, thanks D. It’s my pleasure. Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlined part in each of the following questions. 19. He was asked to account for his presence at the scene of crime. A. complain B. exchange C. explain D. arrange 20. The teacher gave some suggestions on what could come out for the examination. A. effects B. symptoms C. hints D. demonstrations Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is OPPOSITE in meaning to the underlined part in each of the following questions. 21. The International Organizations are going to be in a temporary way in the country. A. soak B. permanent C. complicated D. guess 22. She was happy that she could get in touch with a lot of her old friends when she went abroad to study. A. lose contact with B. lose control of C. put in charge of D. make room for

xin đó giúp mk đi mà cứ khởi động máy tính mà không đăng nhập, dù xóa rồi mà cái này cứ khởi động cùng máy tính giúp mk với

Phân loại giá trị sử dụng : + Chỉ dùng quả + Dùng từ gốc đến ngọn, lá đến hoa, hoa đến quả chuối sứ.

GIẢI THÍCH CHI TIẾT CÁC BƯỚC GIẢI

GIẢI THÍCH CHI TIẾT CÁC BƯỚC GIẢI

Read the following passage carefully and choose the best option to fit each space. Electricity is the most common form of energy used today. (1) _________ the modern world, (2) _________ is instantly available at the touch of a switch. Electricity has numerous uses. The most common use of electricity is to provide artificial lighting. In factories, electricity is used to (3) _________ the electric motor of machines. In offices, electricity is used to light up (4) _________ workplace. It is also used to operate air-conditioners, computers (5) _________ many other machines. 23. A. In B. Round C. During D. From 24. A. Gas B. water C. electricity D. coal 25. A. Driven B. drive C. driving D. drove 26. A. A B. any C. the D. many 27. A. But B. so C. because D. and