一、成语：

A cock is valiant on his own dunghill.——夜郎自大。

A common danger causes common action. ——同仇敌忾。

A contented mind is perpetual feast. ——知足常乐。

Actions speak louder than words. ——事实胜於雄辩。

A faithful friend is hard to find. ——益友难得。

二、俗语或歇后语：

Actions speak louder than words. ——事实胜於雄辩。

A clear conscience is a soft pillow. ——问心无愧，高枕无忧。

A clear conscience is a sure card. ——光明磊落，胜券在握。

A clear conscience laughs at false accusations. ——白日不做亏心事，夜半敲门心不惊。

A clear fast is better than a dirty breakfast. ——宁为清贫，不为浊富。

A close mouth catches no flies. ——病从口入，祸从口出。

A good medicine tastes bitter. ——良药苦口，忠言逆耳。

A good winter brings a good summer. ——瑞雪兆丰年。

A happy heart makes a blooming visage. ——心花怒放，笑逐颜开。

A hero is known in the time of misfortune. ——时势造英雄。