下列关于工程索赔的说法中，正确的是( )。

A．按索赔事件的目的分类，工程索赔分为工期索赔和费用索赔

B．处理索赔必须坚持合理性原则，兼顾承、发包人双方的利益

C．工作内容增加引起的设备费索赔标准，不分自有设备或租赁设备，均按机械台班费计算

D．工程会议纪要即使未经各方签署，也可以作为索赔的依据

用括号里单词的适当形式填空。

1. Our teachers are all       ( friend) to me.

2. I feel like       (have) sports in my spare time.

3. In the afternoon there are many women with their        (baby) in their arms in the garden.

4. We had a hard time          (work) out the problem.

5. -          you        your shoes?  -Yes, we         hem just now. ( clean)