Capitalization and Punctuation Question
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Which sentence is punctuated correctly?
- At the beginning of every class students are supposed to sharpen their pencils and be ready for the lesson.
- At the beginning of every class, students are supposed to sharpen their pencils, and be ready for the lesson.
- At the beginning of every class students are supposed to sharpen their pencils, and be ready for the lesson.
- At the beginning of every class, students are supposed to sharpen their pencils and be ready for the lesson.