根据首字母提示写单词
1、Beforeyouentertheteacher'soffice,youshouldk_____onthedoorfirst.
2、BillGatesisaveryr____manintheworld.Hehasbillionsofdollar
3、Mr.Gaoiseightyyearsold,buthehassomem_____ideas.
4、YanLiweiandZhanTianyouarenationalh______.
5、Somepeoplearep_____flowersinthegarden.
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