I found the following information from an Internet research:
"A comma is used before etc. when it follows more than one listed item, for example, rivers, lakes, streams, etc. (comma used) but rivers etc. (no comma used)."
However, there is another view on this:
"The abbreviation etc., even if only a single term comes before it, is always preceded by a comma."
I'm scratching my head -- How would we put a comma before "etc."?
Thanks.
Momo
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