60.The birds are singing in the tree.(对画线部分提问) 

      are the birds        in the tree?

59. The children are playing games right now.(改为同义句) 

The children are playing games            

58. He is leaving work now.(改为否定句) 

He             work now.

57. The girls are helping the old men.(改为一般疑问句) 

      the girls        the old men?

56. I do my homework every day.(用now改写句子)

I             my homework now.

A：Look!There are many people in the shop. What are they doing? 

B: 51.         

A：Yes. 52.        in the shop. What are they doing in the shop? 

B: 53.        

A: 54.         

B: Because they are leaving for home. 

A: 55.         

   A. Oh,I see. Thank you.

   B. They're buying food and vegetables.

   C. But some people aren't shopping.

   D. Why are some of them going away in a hurry?

   E. Goodbye.

   F.They are going away in a hurry.

50. The Blacks        (sit) at the table and        (have) dinner now.

49. Listen!The children        (read) English loudly.

48. Thanks for        (give) me the card.

47. She is reading.  She        (not draw) the picture.