根据句意及首字母提示在横线处填上恰当的单词，使句子意思完整,语法正确。

1. I try my best to learn English well.  I don't want to let my parents d_______.

2. Dick is k ______ about geography.  He has read many books and travelled to many diifferent places

    around the world.

3. My best fricnd is very smart.  She can always come up w_______ some good ideas.

4. You need a lawyer to r______ you in court.

5. Have you carried the box to the s_______? It's dangerous here.

6. Only ten studcnts came to the class because dll the r_______ of the students were sick.

在市场经济条件下，物业租金水平的高低主要取决于同类型物业的市场经营关系。