Tìm x, biết: a) (2x^2 -1) – 25= 0 b) 8x^3 - 50x =0; c) (x -2) (x^2 + 2x +7) + 2(x^2 – 4) – 5(x- 2) =0;

bài tập: đổi các câu sau sang câu phủ định và câu hỏi 1,they were late for school => => 2,he took his children to the musem last sunday => => 3,Hoa made a new shirt last week => => 4,they painted theid house yellow => =>

làm hộ mik nhanh vs ạ thank trc nha

làm hộ mik nhanh vs ạ thank trc nha

Mng ơi chả hiểu sao cái ứng dụng camera trên máy tính của em nó cứ giật lag ko chụp được ảnh í ạ Ai biết giúp em với ạ

Chọn đáp án phù hợp ...............

giúp em với ạ , em không hiểu gì hết

Mod nếu ns toi copy thì hãy đưa link chứ ạ Vẽ anime/ chibi tức

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1. What do you think “aliens” ……………… actually look like? A. are B. might C. could D. must 2. UFO ……………… might be from people’s imagination. A. sightings B. watching C. viewing D. showing 3. It was ……………… that we all felt surprised. A. so beautiful flower show B. so beautiful a flower show C. such beautiful flower show D. too beautiful flower show 4. Our manager always says that he has met …………different businessmen in his career ..………… he now knows all kinds of them very well. A. too much - as B. such a lot of - for C. too little - so D. so many - that 5. Paula would be sad ……………… Jan left. A. if B. when C. at D. whether 6. Tay Ho is the most famous craft village in Hue ……………… it is the birthplace of the conical hat. A. since B. after C. though D. before 7. In my job, Friday is ……………… of the week. A. busier day B. more busy day C. the most busy day D. the busiest day 8. People used to say that London was …………city, but it is now much ……. than it was. A. the dirtiest - more clean B. the most dirty - more clean C. the most dirty - cleaner D. the dirtiest - cleaner 9. She asked me whether I ……………… that day. A. leave B. left C. was leaving D. had left 10. Dave asked Sandra ……………… her telephone number. A. what is B. what was C. giving him D. to give him 11. The children wanted to know ……………… A. was he English B. was him English C. if was he English D. if he was English 12. They were not sure ………………in Ha Noi A. where they visit B. where they visited C. where they will visit D. where to visit the computer on. 13. 10. John doesn’t know how ……………… the computer on. A. to switch B. switching C. to switching D. to have switched 14. Her parents wondered ……………… to make her feel relaxed. A. how to do B. what to do C. how they did D. what they did 15. I wonder how people …………… themselves when there was no electricity. A. use to entertain B. used to entertain C. are used to entertain D. were used to entertain 16. Most girls ………write down their daily thoughts and feelings in their diaries. A. used to B. was used to C. were used to D. had been used to 17. In the past, the whole village …………….. to the news programme through a loudspeaker. A. was used to listen B. was used to be listening C. used to listen D. used to listening 18. The people in this town ……………… travel by cars. A. used not to B. used to not C. didn’t use to D. did use to not 19. Where ……………… to work? A. did you use B. did you used C. were you use D. were you used 20. These workers ……………… very long hours. A. used to working B. used to be working C. didn’t use to work D. didn’t used to working 21. I ……………… exercise in the morning. Now I do jogging for 30 minutes before I go to school. A. used to not B. did not use to C. did use to not D. was not used to 22. I wish people in the world ……………… conflicts and lived in peace. A. don’t have B. didn’t have C. hadn’t had D. wouldn’t have 23. I wish we ……………… with animals. A. communicate B. can communicate C. could communicate D. would communicate -nhanh nha-