LANGUAGE LINKS
SPACING RULES
ALWAYS SPACE ONCE . .
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A sentence can end with a period, a question mark, or an exclamation point. Periods end declarative sentences. Question marks follow interrogative sentences. Except in direct quotations, avoid exclamation points in research writing.
Place a question mark inside a closing quotation mark if the quoted passage is a question. Place a question mark outside the closing quotation mark if the quotation ends a sentence that is a question. If a question mark occurs where a comma or period would normally be required, omit the comma or period.