To get rid of... so like, purging when you're referring to the eating disorder would be to make yourself throw up or just get rid of the fat. When people say purge it usually has a negative meaning, as well
A commemorative speech has to do with celebrating something or someone. If you want to pay tribute to someone (and there isn't a specific topic you have to talk about), you should talk about someone important to you, someone whom you love and who inspires you - it could be a family member or a friend, or someone you look up to.
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