verb
BAD : Would you please check whether I have forgotten a black handbag in Room 21.
GOOD : Would you please check whether I have left a black handbag in Room 21.
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If you forget to take something with you, you leave it somewhere. Do not use forget if you mention a place: 'If the keys aren't in your jacket, you must have left them in the restaurant.' 'I've left all my money at home.'