3 sentences

1. 咱们别光说闲话，谈谈正事吧。

   zán​men bié guāng shuō xián​huà, tán tán zhèng​shì ba.

   Let's stop chatting and talk about business.

   Source: Dong Chinese Dictionary

2. 好了，闲话少说，让我们言归正传吧。

   hǎo le, xián​huà shǎo shuō, ràng wǒ​men yán​guī​zhèng​zhuàn ba.

   Anyway, enough small talk, let's get back to the point.

   Source: Dong Chinese Dictionary

3. 他在背后说人的闲话。

   tā zài bèi​hòu shuō rén de xián​huà.

   He gossips about others behind their backs.

   Source: Dong Chinese Dictionary