Câu trả lời:

a)2/3+1/5.10/7

b)17/18-11/6

c)7/12-27/7.1/18

d)3/10.(-5/6)-1/8

e)(-4/9).3/8+1/8

f)2/7+28/27:(-4/9)

g)(1/2-2/3).4/5

h)9/7.(3/7-1/2)

Help

Change the following sentences into the passive

1He cleans the office every day.

2 He builds a new house.

3. He gives me an English book.

Change the following sentences into the passive.  

1. I see the mouse in the kitchen. 

2. My sister reads two novels. 

 3. He buys some books. 

 4. I eat an apple. 

 5. They watch some movies. 

 6. She takes some pictures. 

 7. He gives me an English book. 

 8. I eat two apples. 

9. He cleans the office every day.