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A Test on Using Commas CorrectlyBelow is a quick test on using commas.
There is a test on general punctuation use here.
(There are lots more grammar tests here.)
Select the most appropriate version:
Commas after sentence introductions Commas after a transitional phrase Commas after interjections (yes, no, indeed) Commas before conjunctions (and, or, but) Commas for parenthesis Commas in lists Commas with a long subject Commas with numbers Commas with quotation (speech) marks Commas with the vocative case