根据句意，补全单词。

1.  In order to____   healthy, teenagers need to get enough sleep.

2.  He is a man of            . Let's ask him for help.

3.  She is ______ ever stressed.

4.  You should ______ things over with your parents.

5. Wang Le's parents    ____ her because she tells them her problems:

层次分析法的层次大体可分为（）。

A.决策层

B.实施层

C.准则层

D.方案层

E.操作层