三言两语：in one or two words

三三两两：by ones and twos

百里挑一：one in a thousand

三心二意：in two minds

三五成群：in threes and fours

十之八九：ten to one

乱七八糟：at sixs and sevens

相差悬殊：six to one

喋喋不休：talk nineteen to the dozen

半斤八两：the six of one and half a dozen of the other

一刻千金：every minute is precious

一举两得：kin two birds with one stone

一马当先：take the lead

一帆风顺：plain sailing

一臂之力：a helping hand

一点一滴：every little bit

一年半载：a year or so

一心一意：heart and soul

五月初五：the fifth day of the fifth lunar mouth