高中英语单选题求助~1.The police was ____ unaware of the thief's steal

高中英语单选题求助~
1.The police was ____ unaware of the thief's stealing.
b.rather,c.still,d,yet
选B,我的问题是为什么不选c,d
2.Men ____get the best jobs and make the most money.
a.were thought to b.have been thought to
c.has thought to d.thought of
3.The napkins____the tablecloth well.
a.match for b.match on
c.match d.match with
选C,为什么
谢谢各位~~~