I.         Rewrite the following sentences using the given words.

12. How far is it from Hanoi to Sa Pa?

     What is _____________________________________________________________________.

13. You don’t have to get up early on weekends.

     It isn’t necessary______________________________________________________________. 

14. My brother likes reading books better than doing sports.

     My brother prefers_____________________________________________________________.

15. John spends 2 hours a day surfing the Internet.

     It takes______________________________________________________________________.

16. No students in my class is more intelligent than Mary.

     Mary is the_________________________________________________________________.

17. Don't walk under the rain without an umbrella.

     You shouldn't________________________________________________________________.

18. It is obliged to give things to adults by two hands.

     You have ___________________________________________________________________.

19. Mr. Thompson works more responsibly than Dr. Dylan.

     Dr. Dylan ___________________________________________________________________. 

20. I like learning foreign languages.

     I am hooked_________________________________________________________________.