1、( ) to sunlight for too much time will do harm to one’s sk

1、( ) to sunlight for too much time will do harm to one's skin.A Exposed B Being exposed
C Having exposed D After being exposed
2、A middle-aged woman came ( )to the bus stop only( ) the bus had gone.
A run;to find B running;to find C and ran;found D running;finding
3、（ ） is often the case,we have worked out the produce plan.
A Which B When C What D As

1）B.-ing形式做主语,还要表被动,故用-ing形式的被动式
2）B.running做came的伴随状语,only+动词不定式表结果,做结果状语.
3）D.As is often the case,像往常一样.情况常常如此.