39. 没有你的帮助， 我解不出那道数学题。

I can’t _________ _________ the maths problem _________ __________ _________.

38. 我们把那些资料单还给了向导。

We ________ those ________ ________ _________the guide.

37. 那个老人很健康，能活到100岁。

The old man _________ ________ ________, and he can ________ _________ ___________ 100 years old.

36. 那个婴儿出生时三公斤重。

That baby was 3 kilos ________ ________.

35. Elephants walk on tiptoe. (对划线部分提问)

__________ __________ elephants walk?

34. The animal centre will look after your pet well. (改为同意句)

The animal centre will _________ __________ _________ of your pet.

33. Mr. Smith is the owner of the big house over there. (改为同意句)

The big house over there __________ __________ Mr. Smith.

32. Tom likes playing football very much.(改为同意句)

Tom __________ __________ of playing football.

31. This story is very interesting. (改为感叹句)

_________ _________ the story is!

A: Sandy, I’m _____21____ a book about the _____22____ world.

B: Is it very _____23____?

A: Yes. Do you _____24____ that kiwi is a bird _____25____wings?

B: Oh, really? Isn’t that _____26____?

A: Yes, I think so. Did you watch dolphins before？

B：Of course. I _____27____ them at a show. They are funny.

A: The book _____28____ us dolphins can talk _____29____ sounds.

B：What wonderful ____30____!