用should 或shouldn't 填空。

1. All of us              study hard and learn English well.

2. As a student, you              eat in class.

3. You              speak to your parents like this ,you must be polite (有礼貌)

4. You              eat less and take more exercise if want ot be healthier and stronger.

5. My mother is very after work, I              do some housework for her.

( )根据收集的风险信息，做出经营或战略方面的决策并付诸实践。

A．风险管理委员会

B．风险管理部门

C．高级管理层

D．董事会