Americanchildrenhaveexcitingafter-schoollife,anewstudys...
问题详情：Americanchildrenhaveexcitingafter-schoollife,anewstudysays.Manyjuniorandseniorstudentshavelotsoffunnythingstodointheirfreetime.Morethan57%haveactivitieseveryday.82%haveactivitiesatleastfourtim...