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Which of these is punctuated correctly?

01. Yesterday's quiz, which was hard, will hurt my grade.
02. Yesterday's quiz which was hard, will hurt my grade.
03. Yesterday's quiz, which was hard will hurt my grade.
4. Yesterday's quiz which was hard will hurt my grade.

User Nickdnk
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1 Answer

3 votes
its number 1. the rest are technically run on sentences
User Tachyonflux
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