3 sentences

1. 这辆旧车在爬坡时突然熄火了。

   zhè liàng jiù chē zài pá​pō shí tū​rán xī​huǒ le.

   The old car stalled suddenly while climbing the hill.

   Source: Dong Chinese Dictionary

2. 他离开前确认了炉火已经熄火。

   tā lí​kāi qián què​rèn le lú​huǒ yǐ​jīng xī​huǒ.

   He made sure the stove was out before he left.

   Source: Dong Chinese Dictionary

3. 看到老板走进来，原本吵闹的人群立刻熄火了。

   kàn​dào lǎo​bǎn zǒu jìn​lái, yuán​běn chǎo​nào de rén​qún lì​kè xī​huǒ le.

   When the boss walked in, the noisy crowd immediately fell silent.

   Source: Dong Chinese Dictionary