The verb olvidar can be confusing sometimes. In Spanish one can use olvidar or olvidarse and they have the same meaning. Still they have different prepositions and can be used in different ways. For that reason I would like that you don’t forget how to use them properly 
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What do you usually forget? Do you forget special dates, meetings or names? 
¿Olvidas algo en especial? ¿Qué es lo que más olvidas? 
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. Me alegra que te haya sido útil 
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