Good morning, everyone!
① It is never too old to learn.   ② It is easier to fall than to rise.   ③ It is no use crying over spilt (溢出)   milk. ④ It never rains but it pours(泼水).   
Proverbs(谚语) with “It”
活到老, 学到老。
摔倒轻易爬起来难。
覆水难收。
不鸣则已, 一鸣惊人。
⑤ It is easy to open a shop but hard to keep it always open.⑥ It takes three generations (代,辈) to make a gentleman.   
创业轻易守业难。
十年树木，百年树人。