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<p>They have to mail them in (if I remember correctly). Protocal states that you should provide a pre-addressed, pre-stamped envelope for them to put the letter in.</p>
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<p>No. If you can show (=tell, not prove) that you’ve picked a few good ECs (of any type, sports, community service, etc.) that you’ve stuck with for 3-4 years or what not, that’s more important than doing a bunch of meaningless activities at your school!</p>