4 sentences

1. 这件灰毛衣是他最喜欢的。

   zhè jiàn huī máo​yī shì tā zuì xǐ​huan de.

   This grey sweater is his favorite.

   Source: Dong Chinese Dictionary

2. 壁炉底部的灰堆得很高，需要清理一下。

   bì​lú dǐ​bù de huī duī de hěn gāo, xū​yào qīng​lǐ yī​xià.

   Ash has piled up high at the bottom of the fireplace and needs to be cleaned up.

   Source: Dong Chinese Dictionary

3. 他在水桶里搅拌了一些灰，准备粉刷墙面。

   tā zài shuǐ​tǒng lǐ jiǎo​bàn le yī​xiē huī, zhǔn​bèi fěn​shuā qiáng​miàn.

   He mixed some lime in the bucket, preparing to paint the walls.

   Source: Dong Chinese Dictionary

4. 由于生意连续亏损，他感到心灰意冷，想关门了。

   yóu​yú shēng​yi lián​xù kuī​sǔn, tā gǎn​dào xīn huī yì​lěng, xiǎng guān​mén le.

   Due to continuous losses in his business, he felt discouraged and wanted to close down.

   Source: Dong Chinese Dictionary