I.Chia động từ trong ngoặc 1.You (see)……………… Nam this morning? No. I (not meet)………………… him for a long time. 2.When we (arrive)………………she (do)………………….her homework. 3.How old he (be)………………….on her next birthday? 4.She (come) ………………….into the room, (stare)………………at me and (leave)…………without (say)……………………….anything. 5.Since when you (study)………………………..English? 6.They (wait)…………………..for Tom at the bus-stop at this time. 7.What your brothers (do)…………………..at 10 o’clock last night? 8.When we (live)……………….in Hue, we often (get)…………………up late. 9.Mo (teach)…………………in this school since she (graduate)…………………. 10.You (wish)…………… you (be)…………….rich Mn giúp em với em đang cần gấp á

I. Dịch các câu sau sang tiếng Anh: 1. Chúng tôi là bạn thân của nhau từ rất lâu rồi. =) 2. Anh trai tôi dạy môn toán ở trường này từ năm 2000. =) 3. Bố tôi làm cho xí nghiệp đó được 20 năm rồi. =) II. Rewrite the following sentence not to change their meanings: 1. This is the first time he went abroad. =>He hasn't...................................................................................................................... 2. She started driving 1 month ago. => She has................................................................................................................. 3. We began eating when it started to rain. => We have................................................................................................................ 4. I last had my hair cut when I left her. => I haven't................................................................................................................ 5. The last time she kissed me was 5 months ago. => She hasn't..........................................................................................................… III: Chia các động từ sau ở thì quá khứ đơn. 1. I _____ at home last weekend. (stay) 2. Angela ______ to the cinema last night. (go) 3. I and my friends ______ a great time in Nha Trang last year. (have) 4. My vacation in Hue last summer ______ wonderful. (be) 5. Last June I _____ Ngoc Son Temple in Ha Noi. (visit) 6. My parents ____ very tired after the trip. (be) 7. I _______ a lot of gifts for my little sister. (buy) 8. Lan and Mai _______ sharks, dolphins and turtles at Tri Nguyen aquarium. (see) 9. Trung _____ chicken and rice for dinner. (eat) 10. They ____ about their holiday in Hoi An. (talk) IV. Cho dạng đúng của các động từ trong ngoặc ở thì hiện tại hoàn thành 1. He (be)…………. at his computer for seven hours. 2. She (not/have) ……………any fun a long time. 3. My father (not/ play)……….. any sport since last year. 4. I’d better have a shower. I (not/have)………. one since Thursday. 5. I don’t live with my family now and we (not/see)…………. each other for five years. 6. I…… just (realize)…………... that there are only four weeks to the end of term. 7. She (finish) ... reading two books this week. 8. How long…….. (you/know)………. each other? 9. ……….(You/ take)………… many photographs? 10. He (eat)………………. at the King Power Hotel yet? 11. They (live) ………….here all their life.. 12. How many bottles………… the milkman (leave) ………….? He (leave) ……….. six. 13. I (buy)…………. a new carpet. Come and look at it. 14. She (write)………….. three books about her wild life. 15. We (finish) ……………………one English course.

Ai giúp mình ạ mình cảm ơn (•‿•)(•‿•)

Mn giải giúp mình 1 số câu đi ạ mình cảm mơn nhìu 1. .A friend of my brother’s (call)…………. him last night , but he (not be) …………..at home . So I (take) ……………….a message for him . 2. Miss Trang is in hospital . – Really? I (visit) ………………………her tomorrow. 3. . How long ……………you ( know)…………………. Mrs Chi ? - I (know) ………….. her for five years . 4 . Your dog ever (bite) ………….. anyone? - Yes , he (bite) ……….. a policemen last week . 5. We (not see)…………… her since we (be) ……on holiday in Ha Long Bay. 6. Would you like some coffee ? I (just make) …………………… some. 7. . She (feed) ………………. the cat yet ? - Yes , She (feed) …………….. it haft an hour ago. 7. . My uncle (not visit) …………………. us since he (move) to…………… the new town . 8. . We (have) ………………….a party next Sunday . 9. . My uncle just (open) …………………….. a new internet house on Trang Thi Street . 10. . Her grandfather (die)……………20 years ago. 11 . Linh,s brother (lose)…………. his job last month and since then he (be) ………. out of work 12. . Nam (not buy) ………….. a new computer since he(sell) …………….. the old one last month . 13. . I (not have) …………………..a good night sleep for a long time . I now feel very tired . 14 I (not see)……………… your uncle recently. No. He (not go)……………. out since he (buy.)…………..a new color T.V 15. He ( not finish)……………….. it yet , he only (start) …………………..an hour ago . 16. You (ever be)……………. here before ? – Yes, I ( spend )………… my holiday here last year . 17. I ( know )…………………… her since I …………………(leave) school last year. 18. George ( go)…………………….. on holiday every year . 19. . Ann ( look) …………….for a job now . She ( begin)…………….. looking six months ago . She( look)…………………….. for six months 20. . I ( read )……………an interesting book at the moment . 21. . Where …………….you ( spend )………………….. your summer holiday last year , Tam ? 22. . I hope my sister ( send )………………………. me a letter soon . 23. . I (have)……………..those shoes since my eighteen birthday. 24. . We (live)………………in Newcastle for three years now . 25. . The last time I (go)…………….to Brighton was in August. 26. . I (not see)……………..Rachel for ages. She (not visit)……………….us since July. 27. . Martin (be)……………..to Greek five times. He loves the place. 28. . A: I (not see)………….Andrew for weeks. B: It’s week since I last (see)…………….him. 29. . We (move)……………….here in 1993. We (be)……………….here for a long time now. 30. I wish he (phone)………………….me. 31. .This is the first time I (talk)………………..to him. 32. . The last time I (see)……………..her was 2 years ago.

Make all the changes and additions necessary to produce, from the following sets of words and phrases, sentences which together make a complete letter about a disastrous vacation overseas. The first one is done for you (10 marks) Dear Steve, 0) Well, I wish / I say / have / a nice time Well, I wish I could say I was having a nice time 1) but, / be honest / I'd love / be back home! .......................................................................................................................................... 2) You / not believe / problems / I / have / since / arrive / last Saturday. ................................................................................................................................................... ................................................................................................................................. 3) swimming pool / still build, / new air-conditioning system / break down / a day / our arrival .......................................................................................................................................... .......................................................................................................................................... 4) and, / make matters / worse, / there be / outbreak of food poisoning / hotel guests ................................................................................................................................................... ................................................................................................................................. 5) and / not be able / get out / bed / two days! ..........................................................................................................................................6) you think / ask / tour operators / fly / home early? ..........................................................................................................................................7) I really / no think / can stand / day / this place, ..........................................................................................................................................8) although / beach, / I suppose, / quite nice / and / there be / interesting places / visit / the area, ................................................................................................................................................... ................................................................................................................................. 9) if only / feel / enough / go out! ......................................................................................................................................... 10) write / immediately / your advice / as to what / I / do. ..........................................................................................................................................

GIẢI GIÚP MÌNH VỚI NHANH Ạ Trong mặt phẳng Oxy cho đường thằng d: 2x - 3y + 4 = 0. Tính khoảng cách từ điểm K(3; -2) đến đường thẳng d' trong các trường hợp sau: a) d' đi qua M(4; -1) và song song với d b) d' đi qua M(4; -1) và vuông góc với d

B1:Tìm x,y thuộc N biết: xy=x-y+7 B2:Chứng minh rằng: a.(n+10).(n+15) là Bội của 2 b.n.(n+1).(n+2) là bội của 2 và 3 c.n.(n+1).(2n+1) là bội của 2 và 3

Khi nuôi cá thì nghiệm trong hồ, một nhà sinh vật học thấy rằng. Nếu trên một đơn vị diện tích của mặt hồ có n con cá thì trung bình mỗi con cá sau một vụ cân nặng P(n) = 480 – 20n (gram) và cũng tính được sau mỗi vụ mỗi con cá trên một đơn vị diện tích mặt hồ có khối lượng 240 gram. a.Hỏi lúc đầu người ta thả bao nhiêu con cá giống trên một đơnvị diện tích? b.Hãy cho một vài số liệu về tổng sản lượng mỗi vụ thu hoạch để kiểm chứng số cá thả trên một đơn vị diện tích mặt hồ tìm được ở câu a là phương pháp tốt nhất.

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Câu 2: Vẽ sơ đồ và nếu nguyên lý làm việc hệ thống làm mát tuần hoàn cưỡng bức? Giúp mình với ạ. Mình cần gấp. Cảm ơn mn