YOU SAID:

This is the most interesting party I have been to

INTO JAPANESE

これは私が行った中で最も興味深いパーティーです

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This is the most interesting party I have done

INTO JAPANESE

これは私がやった最も興味深いパーティーです

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This is the most interesting party I did

INTO JAPANESE

これは私がした最も興味深いパーティーです

BACK INTO ENGLISH

This is the most interesting party I have

INTO JAPANESE

これは私が持っている最も興味深いパーティーです

BACK INTO ENGLISH

This is the most interesting party I have