Li Lei: 　　51　 me, Tom. Do you have　 52　 eraser?

　Tom: Sorry. I　 53　 .

　Li Lei: Do you think David　 54　 one?

　Tom: I think　 55　 . You can ask　 56　 .

　Li Lei： David, may I have　 57　 eraser, please?

　David: Sorry, Lucy has　 58　 eraser. Please go and ask her.

　Li Lei： Excuse me, Lucy. May I　 59　 David’s eraser?

　Lucy: Certainly. Here you are.

　But you must give it back to him soon.

　Li Lei: OK. 　60　 very much.

　51．________　 52．________　 53．________　 54．________　 55．________　

　56．________　 57．________　 58．________　 59．________　 60．________　

50．There are old bikes under the tree. (变为单数句)

　________________________________________________________________________

49．I play sports every morning. (变为否定句)

　________________________________________________________________________

48．Tim has a gold watch. (变为一般疑问句)

　________________________________________________________________________

47．I think tennis is very interesting. (就划线部分提问)

　________________________________________________________________________

46．My father doesn’t like playing tennis. (变为肯定句)

　________________________________________________________________________

45．I ________ a football fan. I like it very much.

44．________ they need more school things?

43．Card ________ like sports. She thinks it’s boring.

42．Sorry, I ________ answer the question. It’s too difficult.