I feel greatly honored ____ into their society.

问题描述:

I feel greatly honored ____ into their society.
A.to welcome B.welcoming C.to be welcomed D.welcomed
为什么选这个?to be done 不是表将来么~意思不通拉~D不可以吗?

I feel greatly honored __C.to be welcomed__ into their society.
A.to welcome B.welcoming C.to be welcomed D.welcomed
to be done 在这里是被动语态,受到欢迎.用D的话就是两个动词连用,是不对的.