WatchforusonTVThissummer,manyBeijingmiddleschoolstude...
问题详情: WatchforusonTVThissummer,manyBeijingmiddleschoolstudentshadadifferentkindofvacation.Insteadofhangingoutwithfriendsortraveling,theyweretraininghardfortheNationalDaycelebration. Tomarkthesp...