15. The old refrigerator is smaller than the new one.

16. Our summer vacation lasts two months.

17. You should not go there alone.

18. How old is your son?

19. It takes me two hours to do homework every day.

20. Does your school have a library?

21. I spend 30 minutes going to school every day.

22. What is your age?

23. Would you like a cup of tea?

24. We don't have a Math class today.

25. Lan's school has a big library.

26. English is not difficult to learn.

27. Lan is very good at Math.

28. How much does this car cost?

29. My brother is good at swimming.

30. What is your favorite subject?

31. What about going swimming?

32. Why don't we listen to some rap music now?

33. He'd like a cup of coffee.

15 . The old .... is smallẻr than the new one.

17. you should not go there alone.

18. how old is your son?

it takes me 2hours to do my homework every day

does your shool have library

i spent 30 minute going to school everyday

what it your age?

would you like me bringing you a cup of...

we dont have math today

...has a big library

..not difficult to learn

...good at learning math

..does this car cost

...good at swimming

..your favorite subject

..go swimming

why dont we listen......

..like a cup of coffee