get动词的用法很迷惑!

问题描述:

get动词的用法很迷惑!
laws that punish parents for their children's actions against the
laws get parents_______
A worried
B to worry
C worrying
为什么不能选B和C呢?

get是系动词,后面可加形容词作表语.这里用worried就是这种用法.