根据句意和汉语提示写出单词，完成句子。
Our government is trying to improve the living ____ of the farmers in the mountains.
(条件)
--Have some families in China been _________ to have two children.
--Yes.(允许)
It’s impossible for children to walk _________ such forests within two days.(穿过)
She is strict with her students. But __________ speaking most of her students like
her. (总的)
I’m afraid I’m ___________ of the facts of the case. (不确定)