4 sentences

1. 慢着，他吃粉笔吗？

   màn zhe, tā chī fěn​bǐ ma?

   Wait, does he eat chalk?

   Source: OpenSubtitles

2. 教师通常用粉笔在黑板上书写。

   jiào​shī tōng​cháng yòng fěn​bǐ zài hēi​bǎn shang shū​xiě.

   Teachers usually write on the blackboard with chalk.

   Source: AI Challenger 2017

3. 你无法用白色的粉笔写在白色的墙壁上。

   nǐ wú​fǎ yòng bái​sè de fěn​bǐ xiě zài bái​sè de qiáng​bì shang.

   You cannot write with a white chalk on a white wall.

   Source: CCMatrix

4. 他拿出了一支粉笔并在黑板上写下他的问题。

   tā ná chū le yī zhī fěn​bǐ bìng zài hēi​bǎn shang xiě xia tā de wèn​tí.

   He took out a piece of chalk and wrote his problem on the blackboard.

   Source: UM-Corpus: Education