1. 他已到了参军年龄。

5. Our teacher always takes good care of us.

4. We chose Chang Hua League secretary.

3. I think he' ll go there tomorrow.

C. 改成被动语态：

2. She often carries water for Granny Wang.

B. 改成否定句：

A. 就划线部分提问：

1. This is my dictionary.

30. I　　　　 Hsiao Li since she was a little girl.

A. knew　　　　　 B. know　　　　　 C. have known

29. In this factory, it' s hard to tell cadres　　　　 workers.

A. from　　　　　 B. to　　　　　　 C. about

28. We waited　 　　　for the bus.

A. for long time　　 B. a long time　 C. some long time

27. He is 　　thin.

A. fairly　　　　 B. rather　　　　 C. little