2 sentences

1. 他用手抹掉了黑板上的错字。

   tā yòng shǒu mǒ diào le hēi​bǎn shàng de cuò​zì.

   He wiped the wrong character off the blackboard with his hand.

   Source: Dong Chinese Dictionary

2. 老师让他改正作业里的错字，他偏偏不听。

   lǎo​shī ràng tā gǎi​zhèng zuò​yè lǐ de cuò​zì, tā piān​piān bù tīng.

   The teacher told him to correct the typos in his homework, but he stubbornly refused to listen.

   Source: Dong Chinese Dictionary