- 问题详情:Bill,withhisfather,wenttoseehisgrandfater.InthetrainBilloftenputhisheadoutofthewindow.Hisfathersaid,"Don'tdothat.Bill!It'sdangerous."ButBillwentonputtinghisheadoutofthewindow.SohisfathertookBill'shatquietly,hide(藏)itbehindhisbackandsaid...
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