社会理论有哪些特点？

用括号内所给单词的适当形式填空。

1.The people in that country are pretty _____ (relax) about time.

2. Before you go to western countries, you'd better learn to use _____ (knife)  

and forks.

3. Have you got used to _____ (get) up early in the morning?

4. We never visit a friend's house without _____ (call) first.

5. They are busy _____ (practice) using chopsticks now.