HerearesomeAmericanclassroomcustoms: Iftheteacherask...
问题详情：HerearesomeAmericanclassroomcustoms: Iftheteacherasksaquestion,youareexpectedtogiveananswer.Ifyoudonotunderstandthequestion,youshouldputupyourhandandasktheteachertorepeatthequestion.Ify...