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