$x^{2}$-$y^{2}$-2xy$+y^{2}$ Phân tích Ko làm tắt nha

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Mấy bạn giúp mik với ( phần bài tập kiểu như chuyển đổi sang passive void á mấy bạn) They /feed /the animals/ twice a day. …………………………………………………………………………………… 2. You /should keep /these pictures/ in an album. …………………………………………………………………………………… 3. John/ has broken/ my watch. ……………………………………………………………………………………….. 4. People /warned /us /not to go out alone. ………………………………………………………………………………………. 5. They /didn’t give /me/ the money. ……………………………………………………………………………………… 6. You/ must keep/ your room /tidy. ………………………………………………………………………………………. 7. Dangerous driving /causes /many accidents/. ……………………………………………………………………………………… 8. Someone/ left/ the coat/ on the chair. …………………………………………………………………………………….. 9. The librarian /arranged/ the books /into sections. …………………………………………………………………………………… 10. Jack/ has already shut/ the windows/. …………………………………………………………………………………….. 11. You/ must write/ the answers/ on one side of the paper only. ……………………………………………………………………………………. 12. They/ have celebrated/ Teachers’ Day/ largely since 1982. ……………………………………………………………………………………. 13. They/ make/ Honda cars/ in Japan. ………………………………………………………………………………….. 14. He /has just told/ them/ about that. ………………………………………………………………………………….. 15. People /sell /apples/ on the street corner. …………………………………………………………………………………. 16. Someone/ has pushed/ the table/ on the corner. …………………………………………………………………………………. 17. Candidates/ cannot use/ dictionaries. ………………………………………………………………………………… 18. They /asked /her/ some difficult questions at the interview. ……………………………………………………………………………….. 19. They/ sell /a special kind of tea /here. ……………………………………………………………………………….. 20. Someone/ may pick/ you/ up/ at the hotel. ……………………………………………………………………………….