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Which sentence shows the correct use of hyphens? A. He teaches twenty two seven-year olds. B. He teaches twentytwo seven-year-olds. C. He teaches twenty-two seven year-olds. D. He teaches twenty-two seven-year-olds.

Respuesta :

I think the answer is D.

The answer to your question would be that the sentence that shows the correct use of hyphens is the following one: He teaches twenty-two seven-year-olds. That is, the correct option would be D.

When writing a compound number, we use a hyphen between each word. This applies to any number between 21 and 99. That is why twenty-two is hyphenated. Then, seven-year-olds is functioning as a noun.

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