thu gọn đơn thức B=2/5x(-3xy)bình phương và đơn thức C=(-3/4xy)x bình phương y
Mọi ng giup em với hứa đánh giá 5 ⭐️ Ngữ pháp "Tag questions" She's not listening radio, _______? * A . is she B. isn’t she C.was she D.wasn’t she 17. I'm a student, __________? * A. aren’t I B. do I C. am I D. are I 18. I................listening radio, aren't I? * A. aren’t I B. do I C. am I D. are I 19. Let's watch that film, _________? A. had you B. would you C. shall we D. have you 20. Don't get up too late, _________? * A. didn't you B. weren't you C. won't you D. haven't you 21. You're students, __________? A. don’t you B. aren’t you C. are you D. have not you 22. You ............. eat more vegetables, should not you ? * A. shouldn't B. should C. aren't D. haven't 23. She ........ visit her grandmother, would she? * A. can not B. could not C. must not D. would not 24. She'll not come to class today, ………….? * A. might she B. will she C. is she D. may she 25. We'd follow the traffic rules strictly, ............we? A.are not B. may not C. were not D. should not 26. I have planted some trees,........? A.did I B. do I C. didn't I D. haven't I 27. They're not using computer, …………….they? * A.were B. are C. will D. must 28. You couldn't tell anyone about it, ……………you? A.wouldnt B. would C. couldn't D. could 29. He's a farmer, ………………not he? * A. is B. does C. has D. should 30. They're learning English, .......they? * A. are B.couldn't C. are not D. can not 31. He seldom visits you, _____he? A.couldn't B.does C. could D. doesn't 32. It will rain tomorrow,..........................it? * A.will B.will not C. are D. are not 33. Let’s go out,................................we? * A.do B.am C. will D. was 34. Keep silent in the class,.................? *M A. are you B.can you C. could you D. will you 35. Nobody may do that exercise, may ..........? A. she B.he C. they D. we 36. Don't walk too far,......................you? * A.did B. can C. did D. will 37. She seldom plays game,.................she? * A. does B. can C. didn D. is 38. Let's go out with me,..........................we? * A. are not B. can't C. shall D. can not 39. Mary ............. doing her homework at the present, is she? A. are not B. can't C. didn't D. isn't 40. Don't walk slowly,.........................you? * A. will B. can C. did D. is
ai giải giúp mk vs ( sẽ cho full sao )
TT Nội dung câu Đúng Sai 1 Nếu tia Ot nằm giữa 2 tia Om và On thì tÔm+mÔn=tÔn 2 Nếu aÔb+bÔc=aÔc thì tia Ob nằm giữa 2 tia Oa và Oc 3 Hai góc có tổng bằng 900 là 2 góc phụ nhau
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions the environment (in) the city is (much polluted) than (that) in (the) countryside A B C D
123,9 ha = ......km2 2 tấn 35kg = ....tấn 36,9 dm2 = ......m2 21cm 3mm=......cm
Mọi người giúp em làm bài cuối với ạ,em đang cần gấp lm ạ.Em cảm ơn mọi người nhiều!
nhanh lên đúng nhé ko báo cáo đay
Cho hpt $\left \{ {{x + 2y =3} \atop {x + my =1}} \right.$ giải ra x,y hộ tui với
So sánh 2 phân số bằng cách so sánh phần bù (hoặc phần hơn)với 1: a,102/103 và 103/105 b,2017/2016 và 2019/2018 c,73/64 và 51/45
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