f) ( 27 – x ) + ( 15 + x ) = x – 24 .

V. Complete the sentences, using the correct form of Comparatives or Superlatives of the Adjectives:

1. The Great Wall of China is the world’s (long) ___________________ structure.

2. The Me Kong River is (long) ___________________ than the Red River.

3. Mexico City is (big) ___________________ than Tokyo.

4. Ho Chi Minh City is the (big) ___________________ city in Viet Nam.

5. China has the (big) ___________________ population in the world.

6. The Nile River is the (long) ___________________ river in the world.

7. Fansipan is the (high) ___________________ mountain in Viet Nam.

8. Buri Khalifa in Dubai is the world’s (tall) ___________________ building.

9. Russia is the (big) ___________________ country in the world.

10. Petronas Twin Towers in Kuala Lumpur is (tall) ___________________ than Sears Tower in Chicago.

13. You __________ all necessary things along with you before you start your trip.

A. takes B. won’t take C. must take D. mustn’t take

14. You __________ be late for school. It’s against the school regulations.

A. must B. mustn’t C. can D. can’t

15. You __________ take a lot of warm clothes when you go to Sapa in winter.

A. must B. mustn’t C. can D. can’t

16. At Tet, many people present rice to wish __________ enough food throughout the year.

A. in B. for C. at D. with

17. Students __________ copy their classmates’ work.

A. should B. shouldn’t C. must D. not

18. The American __________ a midnight kiss with someone they love.

A. share B. take C. bring D. celebrate

19. VTV is a __________ TV channel in Vietnam. It attracts millions of TV viewers in Vietnam.

A. national B. international C. local D. wide

20. What’s your __________ TV programme?

A. best B. good C. favourite D. like