15. Do you like playing badminton?  
→ Are you fond of playing badminton?

16. The last time they played tennis was two years ago.  
→ They haven't played tennis for two years.

17. About thirty million people are watching this program.  
→ This program is being watched by about thirty million people.

18. The last time I saw him was two days ago.  
→ I haven't seen him for two days.

19. They have painted their house blue and white.  
→ Their house has been painted blue and white.

20. Lan is the best student in our class.  
→ Nobody in our class is better than Lan.

21. We are studying in a very large classroom now.  
→ The classroom we are studying in now is very large.

22. We haven't had a party since last Christmas.  
→ The last time we had a party was last Christmas.

23. Barbara cooks better than Mike does.  
→ Mike doesn't cook as well as Barbara does.

24. She asked, "How many Japanese students are there in your class, Tom?"  
→ She asked Tom how many Japanese students there were in his class.

25. Julia has worked for this company for six years.  
→ Julia started working for this company six years ago.

26. I don't find it difficult to get up early in the morning.  
→ I am used to getting up early in the morning.

27. Although the weather was bad, we went to school on time.  
→ In spite of the bad weather, we went to school on time.

29. Unless he changes his way of living, he'll meet a lot of troubles.  
→ If he doesn't change his way of living, he'll meet a lot of troubles.

30. It's important to do the homework.  
→ Doing the homework is important.

31. No one in this class is more intelligent than Peter.  
→ Peter is the most intelligent person in this class.

32. She isn't old. She cannot get married.  
→ She isn't old enough to get married.