2 sentences

1. 一个人的一言一行，都体现了他的素质。

   yī gè rén de yī yán yī xíng, dōu tǐ​xiàn le tā de sù​zhì.

   A person's every word and action reflects their character.

   Source: Dong Chinese Dictionary

2. 老师的一言一行都应当成为学生的表率。

   lǎo​shī de yī yán yī xíng dōu yīng​dāng chéng​wéi xué​sheng de biǎo​shuài.

   A teacher's every word and action should serve as an example for students.

   Source: Dong Chinese Dictionary