Giải thích và chọn đáp án giúp em với

1/1x2+1/2x3+1/3x4+....+1/2020x1/2021+1/2021x2022

các bạn làm hộ mik nha mik cảm ơn

Rút gọn biểu thức A= (5x-4)×(25x^2+20x+16)-x(2x-3)×(2x+3)

Part 2 Questions 7 – 13 For each question, choose the correct answer. Amy Flora Louisa 7 Whose class learnt about the garden competition from a TV programme? 8 Whose class grew some vegetables? 9 Whose class won a trip in the school garden competition? 10 Whose class painted flowers on their garden wall? 11 Whose class learnt about the insects in their garden? 12 Whose class got help from someone in a pupil’s family? 13 Whose class chose flowers that were the same colour? 5 Turn over ► School gardens competition Amy Our class has just won a prize for our school garden in a competition – and they’re going to make a TV film about it! The judges liked our garden because the flowers are all different colours – and we painted some more on the wall around it. My cousin gave us advice about what to grow – she’s learning about gardening at college. We’re planning to grow some vegetables next year. I just hope the insects don’t eat them all! Flora Our teacher heard about the school garden competition on TV and told us about it. We decided to enter and won second prize! There’s a high wall in our garden where many red and yellow climbing flowers grow and it looks as pretty as a painting! Our prize is a visit to a special garden where there are lots of butterflies and other insects. My aunt works there and she says it’s amazing. Louisa The garden our class entered in the competition is very special. The flowers we’ve grown are all yellow! They look lovely on the video we made of the garden. We also grew lots of carrots and potatoes, and everyone says they taste fantastic. It was an interesting project. Our teacher taught us lots of things about the butterflies in our garden. We also watched a TV programme about them, and did some paintings to put on the classroom wall.

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các bạn làm hộ mik nha mik cảm ơn

Giúp mình với. Mình đang cần gấp

1. Everyone will agree to our suggestion, ……? a. will they b. will he c. won’t they d. won’t he 2. No one phoned while I was out, ……? a. did they b. didn’t they c. did he d. didn’t he 3. Mother has to work to support the family, ……? a. hasn’t she b. has she c. does she d. doesn’t she 4. That is the true story, ……? a. isn’t that b. is that c. isn’t it d. is it 5. I don’t suppose anyone will volunteer, ……? a. won’t they b. will they c. won’t he d. do I 6. Mary scarcely goes out at night,……? a. doesn’t she b. does she c. did she d. doesn’t Mary 7. There won’t be any trouble for you, ……? a. will there b. will it c. will they d. won’t they 8.Tom and Bill have hardly done their homework, ……? a. haven’t they b. did they c. do they d. have they 9. Let’s go swimming this afternoon, ……? a. shall we b. will we c. let we d. let not we 10. Neither of the students got good marks, ……? a. do they b. did they c. don’t they d. didn’t they 11. I know you won’t mind sitting by Peter,_____? a. do I b. don’t I c. will you d. won’t you 12. Nobody came when I was out,_______? a. didn’t they b. did they c. did he d. didn’t he 13. Let’s go to the movie theater,_________? a. Shall we b. don’t we c. don’t they d. do they 14. You don’t meet a single on TV,_________? a. you don’t b. do you c. you do d. don’t you 15. A daily newspaper was published in Germany in 1950,______? a. isn’t it b. is it c. was it d. wasn’t it 16. Nobody is ready to go,_________? a. are they b. isn’t he c. is he d. aren’t they 17. We_____to have cable TV soon, aren’t we? a. are going b. were going c. go d. aren’t going 18. I am a teacher,________? a. are I b. am I c. am not I d. aren’t I 19. There is a park near your house,_______? a. are there b. is there c. aren’t there d. isn’t there 20. Stop talking ,_____? a. will you b. don’t you c. did you d. are you