Exercise 5.

1. The size of the pyramid surprised the visitors.

->The visitors………………………………………………………………………………….

2. The school children have had a meeting in class.

->A meeting……………………………………………………………………………………

3. The villagers welcomed us warmly.

->We……………..…………………………………………………………………………….

4. The weather has turned all the leaves yellow.

->All the………………………………………………………………………………………..

5. The workers are building a new station.

->A new……………….……………………………………………………………………….

6They are growing vegetables in this field.

->Vegetables……………...……………………………………………………………………

7. They built that bridge 5 years ago.

->That…………………………………………………………………………………………..

8. He can’t enjoy the display of fireworks.

->The display…...……………………………………………………………………………...

9. He is painting his house green.

->His house…………………………………………………………………………………….

10. He will send his parents a package.

->His parents……………...……………………………………………………………………

Exercise 4.

1. Our form teacher holds a class discussion.

->A class………………………………………………….……………………………………

2. People call them pop singers.

->They………………………………………………………………………………………….

3. People can grow potatoes in this farm.

->Potatoes…………………………………………………………...…………………………

4. She has bought two new dresses recently.

->Two new……………………………………...……………………………………………..

5. She is going to invite him to her wedding party.

->He ………………………..…………………………………………………………………

6. She took off her raincoat.

->Her………………..………………………………………………………………………….

7. Someone built this house in this area.

->This house………………………………………………….………………………………..

8. Someone might find a solution to the problem soon.

->A solution……………………………………………………………………………………

9. The builders were building the new bridge when we came.

->The new……………..……………………………………………………………………….

10. The students in my class are going to organize a surprise party.

->A surprise……………………………………...……………………………………………

tổng 2 số = 58,1 .nếu tăng số thứ nhất thêm 20% & số thứ 2 tăng thêm 25% thì tổng sẽ = 71,33. tìm  2 số đó

Exercise 2.
 1. Someone has signed all the papers.

->All …………………………………………………………………………………………..
2. They will post your letters when the ship arrives.

->Your letters………………………………………………………………………………….
3. They have sold their car to pay their debts.

->Their car……………………………………………………………………………………..
4. They asked us many questions about our country.

->We ………….……………………………………………………………………………….
5. We should do something about these serious problems.

-> Something…………………………………………………………………………………..
6. The laser bean can kill cancer cells accuracily and effectively.

->Cancer cells………………………………………………………………………………….
7.The doctors are using the laser to cure her birthmark.

->The laser…………………………………………………………………………………….
8. Military scientists have tested the laser against satellites.

->The laser…………………………………………………………………………………….

9. When did they use this new treatment?

->When was………………………………………………………………..………………….
10. They call the big machine in the yard a combine harvester.

->The big machine……………………………………………….……………………………