根据句意用所给单词的适当形式填空。

Everyone should behave ____  in public. (polite)

 --Who's that boy standing over there?  --Sam, a foreign friend of____ . (I) 

After working all night, Kate couldn't stay____ the next morning. (wake)

The UK is an old ____ country, where there are many palaces and castles. (Europe)

Nothing would prevent UNICEF, an international charity,____ the living standards of the children in poor areas. (raise)

观察下图，把下列英文字母代号填入空格中。

A．使德国处于两线作战战役地点    B．二战欧洲战场结束地点

①速度变化   ②结构优化   ③生态美化   ④动力转化

450毫升＝____立方厘米