chuyển sang câu bị động

1some body has taken some of my book away

2 Marry cutting the cake with a sharp knife

3 the children looked at the women with a red hat

4 she used to pull my hat over my eyes

5 i knew that they had told him of the meeting

6 nobody has ever treated me with such kindness

7 a sudden increase in water pressure may break the dam

8 we must take good care of books borrowed from the library

9 a man i know told me about it

10 we can never find him at home for he is always on the move

11 they use milk for making butter and chesse

12 after class, one of the students always erases the chalk board

Cu có 2 đồng vị là \(^{63}Cu\) và \(^{65}Cu\)

oxi có 3 đồng vị là \(^{16}O,\)\(^{17}O\), \(^{18}O\)

Xác định số phân tử CuO tạo nên từ các đồng vị trên

1 the boys broke the window and took away some picture

2 people spend a lot of money on advertising everyday

3 the teacher is going to tell a story

4 Marry is cutting the cake wwith a sharp knife

5 the children looked at the wonmen with a red hat

6 she used to pull my hat over my eyes

7 for the past years , i have done all my washing by hand

8 the pollice haven't found the murderer yet

9 i will put your gloves back in the drawer

10 they told the new pupil where to sit

11 i knew that they had told him of the meeting

12 nobody has ever treated me with such kindness

13 a sudden increase in water pressure may break the dam

14 we must take good care of books borrowed from the library

15 a man i know told me about it

16 we can never find him at home for he is always on the move

17 they use milk for making butter and cheese

they didn't allow Tom to take these books home

2 lightening struck the house

3 this is the second time they have written to us about this

4 Mr . Smith has taught us French for two tear

5 they didn't look after the children properly

6 she often takes her dog for a walk