1. Never look a gift horse in the mouth. 

2. I'm never one to look a gift horse in the mouth.

3. But never one to look a gift horse in the mouth, I say, be gracious and accept this delightful offering.

4. Look a gift horse in the mouth.

5. Never look gift horse in the mouth.

6. Don't look a gift horse in the mouth.

7. Some experts wonder why Petrie's is looking a gift horse in the mouth.

8. That villain of a landlord was not the one to look a gift horse in the mouth.

9. It was one of mother's maxims never to look a gift horse in the mouth.