Li Li has to deal with a lot of things like phone calls, faxes and mail every day in the office , and she has to learn how to prioritize. The comma is necessary because of the repeated subject (which is good, considering the style of your sentence).
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flower1234Can I say this?Li Li has to deal with a lot of things like phone calls, faxes and mail every day in the office, and she has to learn how to prioritize.The comma is necessary because of the repeated subject (which is good, considering the style of your sentence).