Помогите) пожалуйста)

1 задание
1/ servants
2.expensive
3.strengthen
4. economic
5. differences 
2 задание
-We came here to dance.
-I know about his wish to leave
- I agreed not to watch TV.
- He is too young to swim in the sea alone.
- You are adult enough to know what you should do.
3 задание 
1. for
2.about
3.of 
4.from
5 to