Question

Which sentence uses a hyphen correctly? A. Our new coach is an ex-teacher. B. Wait here while I un-lock the door for you. C. I can't believe my-own brother is now mayor. D. You owe me one-hundred dollars.

Answer 1

A. Our new coach is an ex-teacher.

A hyphen is needed between ex and teacher to show that the two go together as a hyphenated compound noun. Unlock does not require a hyphen because it uses a prefix. Option C does not use a hyphen correctly because there should not be a hyphen between the my and own. Also, one hundred does not need a hyphen. Only numbers from twenty-one through ninety-nine are hyphenated.

Answer 2

The best fit for this question would be option A "Our new coach is an ex-teacher." A hyphen is a dash (-) that would go between two words to make them one word. In this case it would be ex-teacher since how ex isn't a word.

Hope this helps!