4 sentences

1. ‎你是怎么解出第九题的？

   ‎ nǐ shì zěn​me jiě​chū dì​jiǔ tí de?

   How did you solve question nine?

   Source: OpenSubtitles

2. 第九层有间医院。

   dì​jiǔ céng yǒu jiān yī​yuàn.

   There's a hospital on level nine.

   Source: OpenSubtitles

3. 第九页提到了你。

   dì​jiǔ yè tí​dào le nǐ.

   You are mentioned on page nine.

   Source: OpenSubtitles

4. 这是第九个进入房间的人。

   zhè shì dì​jiǔ gè jìn​rù fáng​jiān de rén.

   This is the ninth person to enter the room.

   Source: Dong Chinese Dictionary