Bài 8. Một đội công nhân có 40 người được giao đắp một đoạn đường trong 15 ngày. Sau khi làm được 3 ngày thì có 20 CN bị điều đi nơi khác. Hỏi đội CN đó đắp xong đoạn đường được giao trong bao nhiêu ngày? (mức làm của mỗi người như nhau)

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Chuyển sang câu bị động: change these sentences into passive voice 1. People grow rice in many countries in the world. -> Rice ______________________________________________________________ 2. Graham Bell invented the telephone many years ago. ->The telephone _______________________________________________________ 3. Lan practices English every day. -> English ____________________________________________________________ 4. Mary sent me this letter two days ago. -> I ___________________________________________________________________ 5. People make compost from vegetables. -> Compost _______________________________________________________ 6. I saw a strange man in my garden yesterday. -> A strange man ________________________________________________________ 7. They clean the floor every morning. -> The floor ___________________________________________________________ 8. They made these cars in the USA. -> These cars __________________________________________________________ 9.We planted many trees in the school garden. -> Many trees __________________________________________________________ -> English __________________________________________________________ 10. My father often reads books before bedtime . -> Books ................................................................................................................ 11. Lan bought some comic books for her brother . -> Some comic books .................................................................................................... 12. My sister received a letter yesterday . -> A letter .................................................................................................................. 13. Nowadays people use electricity for lighting. -> Electricity .........................................................................