YOU SAID:
my muffin has gone missing
INTO JAPANESE
私のマフィンが行方不明になりました
BACK INTO ENGLISH
My muffin went missing
INTO JAPANESE
マフィンが行方不明になりました
BACK INTO ENGLISH
Muffin went missing
INTO JAPANESE
マフィンが行方不明になった
BACK INTO ENGLISH
Muffin went missing
Well done, yes, well done!