tìm số có 3 chữ sô biết trung bình cộng của 3 chữ số bằng 6, chữ số hàng trăm gấp 3 lần chữ số hàng chục, chữ số hàng chục bằng 1/2 chữ số hàng đơn vị

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Change these sentences into passive voice: 1, They are writing a book now ………………………………………………………………………………………………….. 2, We will buy a house tomorrow …………………………………………………………………………………………………. 3, He has cleaned the house. …………………………………………………………………………………………………. 4, My mother has had me wash the dishes. …………………………………………………………………………………………………. 5, It is necessary to finish this task by November. …………………………………………………………………………………………………. 6, They are making me buy a new car. …………………………………………………………………………………………………. 7, They don’t say that her family moved to another city. …………………………………………………………………………………………………. 8, Mary heard her father taking to his worker. …………………………………………………………………………………………………. 9, Can she develop the program better? …………………………………………………………………………………………………. 10, when did your father run a new restaurant? …………………………………………………………………………………………………. 11, They need to build the house by July. …………………………………………………………………………………………………. 12, It was essential to end the bad things coming to my life. …………………………………………………………………………………………………. 13, We used to meet him when we were living at that city. …………………………………………………………………………………………………. 14, She didn’t get me to talk with her son. ………………………………………………………………………………………………….