用所给动词的适当形式填空。

1. He is ______ (clever) boy in the class.

2. We always have a great time______ (chat) with each other.

3. ______ (take) a bus is much faster than walking,

4. Quiet! The students______ (have) an English class.

5. Could you tell me how______ (get) to the hospital?

6. My mother asks us ______ (not watch) too much TV

在系统分析中，系统协调的目的是通过某种方法组织或调控所研究的系统，使之从无序转为有序，使系统达到（）。

A．协同状态

B．统一状态

C．可操作状态

D．合理状态