3 sentences for 没错 (méi​cuò — reliable)

1. 说明天会下雨，准没错。

   shuō míng​tiān huì xià​yǔ, zhǔn méi​cuò.

   If they say it will rain tomorrow, it almost certainly will.

   Source: Dong Chinese Dictionary

2. 你按我的话去做，保管没错。

   nǐ àn wǒ de huà qù zuò, bǎo​guǎn méi​cuò.

   Do as I say, and I guarantee it will be right.

   Source: Dong Chinese Dictionary

3. 跟着他走准没错。

   gēn​zhe tā zǒu zhǔn méi​cuò.

   You can't go wrong following him.

   Source: Dong Chinese Dictionary