1. They gave Quang the opportunity to study abroad.
-> Quang had the opportunity to be allowed to study abroad by them
* 2. Does Tom receive many gifts on his birthday?
-> There were a lot of presents on Tom's birthday
3. We will plant a lot of trees in the park.
-> A lot of green trees in the park we plant
4. Penicillin can cure many dangerous diseases.
-> Many dangerous diseases are cured by Penicillin
5. We must pay the bill immediately.
-> Invoices are paid by us immediately
6. Many people in the world speak English.
-> English is spoken by many people around the world
7. Why don't you go to Ben Thanh Market?
-> How come you don't go to Ben Thanh Market
8. You should not go out now because it is too late.
-> You'd be better off if you don't go out now because it's too late
9. I recommend that you review the lesson carefully for the next exam.
-> You should study carefully for the next term I advise you