$\text{1. Tom wrote this report yesterday.}$

$\text{⇒ This report was written by Tom yesterday.}$

$\text{2. People plant a lot of flowers in Da Lat.}$

$\text{⇒ A lot of flowers are planted in Da lat.}$

$\text{3. Our form teacher holds a class discussion every month.}$

$\text{⇒ A class discussion is held by our teacher every month.}$

$\text{4. Miss Hoa teaches my sister English.}$

$\text{⇒ My sister is taught English by Miss Hoa.}$

$\text{5. People use milk for making butter and cheese.}$

$\text{⇒ Milk is used for making butter and cheese.}$

$\text{6. They have given Tom a present.}$

$\text{⇒ Tom has been given a present.}$

$\text{7. Does Mr. Green often take them to the cinema on Sundays?}$

$\text{⇒ Are they often taken to the cinema by Mr. Green on Sundays?}$

$\text{8. Do they hold a meeting every month?}$

$\text{⇒ Is a meeting held every month?}$

$\text{9. The weather has turned all the leaves yellow.}$

$\text{⇒ All the leaves have been turned yellow by the weather.}$

$\text{10.Have they asked you several questions?}$

$\text{⇒ You have been asked several questions by them, haven't you?}$

$\text{11. Jonh used to visit his parents at weekends.}$

$\text{⇒ His parents used to be visited by him at weekends.}$

$\text{12. They used milk for making butter and cheese.}$

$\text{⇒ Milk is used for making butter and cheese.}$

$\text{13. The students are writing the lessons now.}$

$\text{⇒ The lessons are being written by the students now.}$

$\text{14. Her teacher taught her how to apply theory.}$

$\text{⇒ She was taught how to apply this theory by her teacher.}$

                                    $\text{-----Done by Lhghbebong-----}$

$\text{Cho mik xin câu trả lời hay nhất, 5 sao và cảm ơn nha.}$

=>

1. This report was written by Tom yesterday. 

2. A lot of flowers are planted in Da lat.

3. A class discussion is held by our teacher every month. 

4. My sister is taught English by Miss Hoa.

5. Milk is used for making butter and cheese. 

6. Tom has been given a present. 

7. Are they often taken to the cinema by Mr. Green on Sundays?

8. Is a meeting held every month? 

9. All the leaves have been turned yellow by the weather. 

10. You have been asked several questions by them, haven't you? 

11. John's parents used to be visited by him at weekends. 

12. Milk is used for making butter and cheese.

13. The lessons are being written by the students now. 

14. She was taught how to apply this theory by her teacher.