A-A+
Mary could invite her friends to the house at
问题详情
Mary could invite her friends to the house at her own ______ if she told her mother in time.
A．prudence
B．discretion
C．reaction
D．exertion
参考答案
正确答案：B
解析：(discretion斟酌决定的自由，处理权限)。句意为：如果玛丽及时告诉母亲，她可以自行邀请朋友到那个房子里去。A．prudence慎重；C．reaction反应；D． exertion尽力。
