question about english
问题描述:
question about english
People say___rules are the unspoken cues that dictate behaviors and actions.
A. hiddenB. to hideC. hiding D. hide
请给出正确选项及**选择原因**谢谢
答
A
要选一个定语嘛,排除BD,rules应该是被隐藏吧,选hidden.