3 sentences for 巧 (qiǎo — coincidental)

1. 真巧，我在这儿遇见了你。

   zhēn qiǎo, wǒ zài zhè​r yù​jiàn le nǐ.

   What a coincidence to run into you here.

   Source: Dong Chinese Dictionary

2. 真是太巧了。

   zhēn shì tài qiǎo le.

   It's such a coincidence.

   Source: OpenSubtitles

3. 真不巧，正好赶上了早高峰的大堵车。

   zhēn bù qiǎo, zhèng​hǎo gǎn​shàng le zǎo gāo​fēng de dà​dǔ​chē.

   Unfortunately, I got caught in the morning rush hour traffic jam.

   Source: Dong Chinese Dictionary