If you put the "了" after the verb-"请", it emphasize the action-"请" is done. Or you put the "了" after the sentence, it emphasize the event is done. Whichever you use, Chinese can understand. But normally we use the former.
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April 5, 2013
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Normally, if you add "好好" before the verb, that means you will do it hard. But it isn't done. And people usually put some words like "要" before the "好好". It make the sense more clearly.