7.　 “My little cat has died,” the boy said __________ (悲伤).

6.　 Different people have different eating _____________ (习惯) around the world.

5.　 Could you tell me how many ____________ ( shelf ) there are in your school library?

( B ) 根据句意和汉语注释，写出单词的正确形式。

4.　 Last Saturday evening Helen ran into a friend of __________ ( she ) at the shopping centre.

3.　 The boy is talented and ______________ ( energy ), so we all like him.

2.　 Next Sunday will be my brother’s __________ ( nine ) birthday.

( A ) 根据句意，用括号内所给单词的适当形式填空。

1.　 Which city has ____________ ( little ) air pollution, Wuxi or Nanjing?