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!

题目

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…

答案

1.B
vegetable与bury是被动关系.排除C、D.
这个动作不是正在进行,排除A.
2.A
considering考虑到
3.C
know与Dr.Lillian是被动关系,排除A.
know不是已经完成的动作,排除B.也不是将要发生的动作,排除D.