How do you know that?

你怎么知道的？

You know what I mean?

你知道我的意思吗？

Do you know Mr Young?

你认识杨老师吗？

What pets do you know?

你知道哪些宠物？

Tell me what you know!

告诉我你知道的！

Do you know the answers?

你知道答案吗？

Talk to someone you know.

和你认识的人谈谈。

What hobbies do you know?

你知道哪些爱好？

What animals do you know?

你知道哪些动物？

What do you know about it?

你对它了解多少？