Dear Ms. Lo
(with regard to / despite / according to) your interest in the Hong Kong School of Etiquette, we are writing to inform you that (due to / since / therefore) response to next month’s classes, a special seminar called "Etiquette for Businessmen" will be available on Saturday afternoons for the next three weeks.
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I am struggling to make a choice between:
1. “with regard to” and “due to”
2. “according” and “therefore”
I can’t decide which one is correct, I feel both ( “1” and “2” ) are fine.
I am an English learner, your help and explanation will be much appreciated.
Thanks very much.