Page 909 - Wordsmith A Guide to College Writing
P. 909

Motorcycles, off-road vehicles, and cars are his passion at
                    seventeen.




                       The dog had tracked mud across the porch, into the kitchen, and

                    up the stairs.




                       The doctor asked Neville if the pain occurred before he ate, after
                    he ate, or while he ate.




               If only two items appear in the series, no comma is used.




                       Stacy said her two worst vices were soap operas and talk shows.



                       Arnold was slowed by a traffic tie-up in the tunnel and a wreck

                    near the downtown connector.




                       Jason takes care of his parents because they are old and

                    because they once took care of him.






               Practice 23-2  Using Commas to



               Join Items in a Series






               Insert commas to join words, phrases, and clauses in a series of three

               or more. Write correct beside the sentence that does not need a

               comma.
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