Cho tam giác ABC trên tia đối của tia AB lấy điểm D sao cho AE = 1/3 AC Tia BE cắt CD tại M. CHứng minh: a, M là trung điểm của CD b, AM=1/2BC Làm bằng cách lớp 7 nha

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I. Fill in each blank with one suitable preposition. ( điền 1 giới từ thích hợp) 1.Hoa’s new skirt was white ________red and yellow flowers ________it. 2.Lien made a cushion ________her own room. 3.Nam lives a long way ________his grandparents’ house. 4.Liz helped me a lot ________my stamp collection. 5.Did you speak ________Mr. Robinson ________your vacation ________Dalat? 6.There is a souvenir shop near the exist ________the zoo. II. Give the correct form of the verbs in the brackets to complete the sentences(chia động từ trong ngoặc)( chú ý câu điều kiện ) 16. Ted and Amy (to be / marry)_______ for 24 years. 17. Fred ____ (to answer) the phone if his wife (to have) _______________ a bath. 18. If Claire ______________ (to wear) this dress at the party, our guests ________(not/to stay) any longer. 19. They __________ (not/to survive) in the desert if they __(not/to take) extra water with them. 20. You _______(to cross) the Channel if you _________ (to fly) from Paris to London. 21. I _______________ (to remember) you if you ____________ (to give) me a photo. 22. If you ________(to press) CTRL+S, you _______(to save) the file. 23. He ______________________ (not/to understand) you if you (to whisper) ______________. 24. If we ______________ (to send) an invitation, our friends _______(to come) to our party. 25. At last the bus came. We (to wait) _______________ for half an hour. 26. I'm feeling sick.I (to eat) _______________ so much chocolate last night. 27. If I _______________ (to touch) this snake, my girlfriend ________________ (not/to scream). 28. I think the weather (to be)_______ nice later. IV. Complete the second sentence so that it has the similar meaning to the first one.( viết lại câu sao cho nghĩa không đổi, chú ý câu bị động nhé) 31. They will widen the road to our village next year. The road_______________________________________________________ 32. I think you should go to work by bi ke. Why don't______________________________________________________ 33. We will plant more trees along this street. More trees____________________________________________________ 34. He got the first prize at the competition. His mother is very happy. His mother________________________________________________________ 35. Mr Hung lived in the country when he was a child. Mr Hung used___________________________________________________ 36. They sell these chemicals everywhere in my hometown. These chemicals________________________________________________ GIÚP VS Ạ ĐAG CẦN GẤP