They are able to talk openly to one another whenever ____ of them feels hurt .
问题描述：
They are able to talk openly to one another whenever ____ of them feels hurt .
A.either B.both C.some D.whether
为什么选A,请详解,
D.all D选项打错了.
答
他们能够公开地讨论到另一个时,他们感觉受到了伤害