缺词填空。 Most American families are smaller than the families in other countries. Most American families have one or two 1.c_____ each. Children in the US will leave their parents’ home when they grow up. They usually live 2. f_____ from their parents because they want to find good jobs. They oft en write to their parents or 3.t_____ them. And they often go to 4. v_____  their parents on holiday. Parents usually 5. l_____ their children choose their own jobs. Americans think 6. i _____ important for young people to decide on their lives by 7.  t _____ . Children 8. b _____ to do some work around their house when they are very young. And in many families, parents 9. g _____ some money to their children as a prize (奖赏) so that they learn how to make money10. l_____