all things are difficult before they are easy 凡事必先难后易1：before 在这边坐连接词还是什么词?2：为什么使用they 而不是it

All things are price. all things are possible All other things are secondary. all things are passed away all things are difficult before they are all things are difficult before they are All other things are secondary什么意思? a place where all things are possible Unto the pure all things are pure. all those things are p___ the river every things all are showy cloud 英语翻译还有all things are diffcult before they are easy. 请翻译All things are difficult before they are easy All things are difficult before they are easy. 请问All things are difficult before they are easy.. All things are difficult before they are easyYisi all sort of things are true of it which are ______,the price would be reasonable.选项:a、All things are consideredb、For all things to considerc、All things consideredd、If all things considered