----- Nội dung dịch tự động từ ảnh -----
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...