相关1Knowinghowtoaskforh的文学知识

问题详情：用所给词的适当形式填空。1.Knowinghowtoaskforhelp(polite)isveryimportant.2.Weneedtochangethewaywespeakindifferent(situation).3.Inordertobepolite,sometimesyouneedtospendtime(lead)intoarequest.4....