Anonymous Do I use a comma before which? Hi, A comma before which would be optional. I wouldn't place a comma there.
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AnonymousDo I use a comma before which?Hi,
AnonymousThank you for your response which was much appreciated.Yes. 'your response' specifies the referent completely. There is no contrast implied between your response which was much appreciated and another of your reponses which was, perhaps, not appreciated quite so much.
Do I use a comma before which?