belong to；less than；at war；in return；in search of；decorate...with
1．The young man is ____________________ twenty years old.
2．The little girl gave me a big hug(拥抱)__________________ for my help.
3．China is a country ___________________ the Third World.
4．He went __________________ a doctor for his sick wife.
5．France was ________________ with several other European countries then.
6. The Amber Room was _____________________gold and jewels.