急!求助!三道高二有关分词作状语的选择题!写上分析过程!谢谢!

急!求助!三道高二有关分词作状语的选择题!写上分析过程!谢谢!1.if __in wet sand ,the vegetable can remain fresh for a long time .A.being buried B.buried C.bury D.burying 2.__one of the leading poets go American today ,sonia sanchez has also written a number of novels and plays .A.considering being B.considered C.having considered as D.to consider 3.__as the "first lady of speech ",Dr.Lillian glass is recognized as one of the world's leading experts on communication skills .A.knowing B.having known C.known D.to be known最好写上分析过程…