Americanchildrenhaveexcitingafter-schoollife,anewstudys...
問題詳情：Americanchildrenhaveexcitingafter-schoollife,anewstudysays.Manyjuniorandseniorstudentshavelotsoffunnythingstodointheirfreetime.Morethan57%haveactivitieseveryday.82%haveactivitiesatleastfourtim...