When ______ why he walked in without permission,he just stared at us and said nothing.A.been asked\x05B.asked\x05C.askin
问题描述：
When ______ why he walked in without permission,he just stared at us and said nothing.A.been asked\x05B.asked\x05C.asking \x05D.to be asked
为什么不选B ,而选A?
答
主句的he能执行这个动作,那就是主动,如果是被问,那就是被动.
例如：When asked when he went there,he did not know how to answer.
他被问.