2 sentences

1. 他经常在学校里惹事。

   tā jīng​cháng zài xué​xiào lǐ rě​shì.

   He often causes trouble at school.

   Source: Dong Chinese Dictionary

2. 我不想再惹事了。

   wǒ bù xiǎng zài rě​shì le.

   I don't want to cause any more trouble.

   Source: Tatoeba