根据句子意思，用所给单词的适当形式填空。未提供单词的根据上下文填入适当的词。

Most American families are  (small) than the families in other countries. Most American families have one or two parents and one or two children each.

Children in the US will leave their  (parent) home when they grow  .They usually live far from their parents  they want to find good jobs. They often write to their parents or telephone them. And they often go to visit their parents holiday.

Parents usually let their children (choice) their own jobs. Americans think it important  young people to decide on their lives by  .Children are asked  (do) some work around their house. And in many families, children are paid for doing some housework so that they learn how  (make) money for their own use.