III. Correct the sentences if necessary. Check (√) s any that are already correct:

7. The interrogation, conducted by the police officers, have lasted for several hours.

8. The tenants in the apartment next to mine is giving a party this evening.

9. The president, surrounded by secret service agents, is trying to make his way to the podium.

10. The buildings destroyed during the fire are being rebuilt at the taxpayers’ expense.

11. 20 percent of the forest have been destroyed lately.

12. The witnesses saw that most of the fire in the hills was extinguished.

13. Some of the animals from the zoo was released into the animal spreserve.

14. All of the students in the class  is required to turn in their term papers next Monday.

15. Half of the food that we are serving to the guests are still in the re frigerator.

16. We believe that some of the employees is going to be devoted to quality control.

17. It is impossible to believe that somebody actually admire that man.

18. Each of the doctors in the building needs to have a separate reception area.

19. The president felt that no one were better suited for the position of chief staff advisor.

20. Everybody participating in the fund-raiser are to turn in the tickets by 8.00.

V. In each of the following sentences, put the verb in brackets into the correct form:

1. Two weeks (go) fast when you are on vacation.

2. Many of the girls in my school (wear) white shirts.

3. Three kilos of potatoes (make) the basket heavier.

4. Some of the tables in the classroom (be) broken.

5. Bacteria of the harmful kind (cause) diseases. / Bacterium : vi khuẩn  Data / Datum

6. What we need most (be) books.

7. The English (be) proud and independent people.

8. The United States (have) a population of 250 million.

9. There (be, not) any letters in the mail for you today.

10. Everyone in both cars (be) injured in the accident last night.

11. The books borrowed from the library (be) on my desk.

12. The boy who won the two medals (be) a friend of mine.

13. The quality of the candies (be) poor.

14. Gold, as well as platinum, (have) recently risen inprice.

15. His courage and endurance (be) tried to the utmost.