How to write this query?

　　怎么寫(xiě)這個(gè)疑問(wèn)？

　　"I know how to write," Mary answered.

　　“我知道怎么寫(xiě)�！爆旣惢卮�。

　　Do you know how to write printing letters?

　　你知道怎么寫(xiě)印刷體嗎？