It is a small world. 
人生何处不相逢（冤家路窄） 
at sixes and sevens 
乱七八糟, 不和 
hand in glove 
亲密地, 勾结着 
A bad beginning makes a bad ending. 
不善始者不善终。 
A bad thing never dies. 
遗臭万年。 
A bad workman always blames his tools. 
不会撑船怪河弯。 
A bird in the hand is worth than two in the bush. 
一鸟在手胜过双鸟在林。 
A boaster and a liar are cousins-german. 
吹牛与说谎本是同宗。 
A bully is always a coward. 
色厉内荏。 
A burden of one's choice is not felt. 
爱挑的担子不嫌重。 
A candle lights others and consumes itself. 
蜡烛照亮别人，却毁灭了自己。 
A cat has 9 lives. 
猫有九条命。 
A cat may look at a king. 
人人平等。 
A close mouth catches no flies. 
病从口入。 
A constant guest is never welcome. 
常客令人厌。 
Actions speak louder than words
事实胜于雄辩。