Bài 1 Một hình tam giác có diện tích bằng diện tích hình vuông có cạnh 12cm .Tính độ dài đáy của hình tam giác,biết chiều cao tương ứng với độ dài cạnh của hình vuông đó

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Rewrite the sentences, use the verbs in passive forms 1. They mix the glass with certain specific chemicals. The glass ____________________________________________________________ 2. People use milk for making butter and cheese. Milk _______________________________________________________________ 3. Careless driving causes many accidents. Many accidents ______________________________________________________ 4. Weeds cover the river bank. The river bank _______________________________________________________ 5. My sisters don’t use this house very often. This house __________________________________________________________ 6. Do they teach French in this school ? Is __________________________________________________________________ ? 7. His brother will clean the room later. The room ___________________________________________________________ 8. The students will hold a meeting before the Teachers’ Day. A meeting ___________________________________________________________ 9. We can use the garbage to make fertilizer. The garbage _________________________________________________________ 10. Will they build the new bridge by the end of the year? Will _______________________________________________________________? 11. Mai can answer most of the questions. Most of the questions __________________________________________________ 12. They can’t make tea with cold water. Tea ________________________________________________________________ 13. We should use cloth bags instead of plastic bags. Cloth bags ___________________________________________________________ 14. The worker cleaned the streets yesterday. The streets __________________________________________________________ 15. Nam made a lot of beautiful toys from recycled plastic. A lot of beautiful toys _________________________________________________ 16. Someone translated this letter into Vietnamese. This letter ___________________________________________________________ 17. My grandfather built this house over 40 years ago. This house __________________________________________________________ 18. Did Miss Thanh teach you to draw the Christmas cards? Were _______________________________________________________________ ? 19. The workers used milk for making butter and cheese. Milk _______________________________________________________________ 20. The thief stole my camera from my hotel room a few days ago. My camera __________________________________________________________