这封函是谁写的? 這封函是誰寫的? 這封函是誰寫的?

Who wrote this letter?

Simplified
这封函是谁写的?
Traditional (Taiwan)
這封函是誰寫的?
Pinyin
Zhè fēng hán shì shéi xiě de?
Bopomofo
ㄓㄜˋ ㄈㄥ ㄏㄢˊ ㄕˋ ㄕㄟˊ ㄒㄧㄝˇ ˙ㄉㄜ?

Written with HSK 7-9 vocabulary, at CEFR level C1.

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