5 sentences

1. 天知道我们需要现金。

   tiān​zhī​dao wǒ​men xū​yào xiàn​jīn.

   Lord knows we need the money.

   Source: CCMatrix

2. 天知道他去哪儿了。

   tiān​zhī​dao tā qù nǎ​r le.

   God knows where he went.

   Source: CCMatrix

3. 天知道她经历了些什么。

   tiān​zhī​dao tā jīng​lì le xiē shén​me.

   God knows what she’s been through.

   Source: CCMatrix

4. 天知道他们还干了什么。

   tiān​zhī​dao tā​men hái gàn le shén​me.

   God knows what else they've done.

   Source: OpenSubtitles

5. 天知道他们有多需要一个温暖的拥抱。

   tiān​zhī​dao tā​men yǒu duō xū​yào yī​ge wēn​nuǎn de yōng​bào.

   God knows how much they need a warm hug.

   Source: CCMatrix