5 sentences

1. 我有急事，先失陪了。

   wǒ yǒu jí​shì, xiān shī​péi le.

   I have urgent business, so please excuse me.

   Source: Dong Chinese Dictionary

2. 他因为有急事提前走了。

   tā yīn​wèi yǒu jí​shì tí​qián zǒu le.

   He left early because of some urgent business.

   Source: Dong Chinese Dictionary

3. ‪你昨天的急事处理好了吗？

   ‪ nǐ zuó​tiān de jí​shì chǔ​lǐ hǎo le ma?

   Did you sort out that urgent matter from yesterday?

   Source: OpenSubtitles

4. 他因为家里有急事而提前离开了。

   tā yīn​wèi jiā lǐ yǒu jí​shì ér tí​qián lí​kāi le.

   He left early because of an urgent family matter.

   Source: Dong Chinese Dictionary

5. 由于明天家里有点急事，我得向经理请假。

   yóu​yú míng​tiān jiā​lǐ yǒu​diǎn jí​shì, wǒ děi xiàng jīng​lǐ qǐng​jià.

   Since there's an emergency at home tomorrow, I have to ask the manager for leave.

   Source: Dong Chinese Dictionary