làm bài tập với nha mọi người

1, The lesson is explained by the teacher 

2, Food is being cooked by my mother in the kitchen

3, These exercises can't be done quickly by Lap

4, I was bought a bike two day ago by my parents 

5, The letter haven't been stamped by Huy

6, The report had been finished by noon by Ly

7, Khai's family isn't known anything

8, Who was it written by?

9, A building will be built by the workers near my school 

10, Our children are going to be bought some new clothes on New Year