一道高三东城英语单选题!

问题描述:

一道高三东城英语单选题!
30.___ to change her schedule because the plane arrived late,the famous actress cancelled the appointment with the local press.
A.Forcing \x05B.Forced \x05\x05C.To force \x05\x05\x05D.Being forced
为什么选B,不能选A?

主语是人啊(she is forced to change her schedule)