put (someone/something) through (their) paces

to test the ability or skill of a person or system.

This contest will really put you guys through your paces.

Frank took the car for a drive through the mountains and really put it through its paces.

• home stretch
• home truth
• honest to God
• honest to goodness
• honest-to-goodness
• Honesty is the best policy.
• honeymoon period
• hoof it
• hook, line, and sinker
• hook up
• hook up with
• hook up with someone
• hope against hope
• hope chest
• hop into bed with
• hop into bed with someone
• hopped up
• hop to it
• hornet's nest
• horn in
• horn in on
• horn in on someone
• horn in on something
• horse around
• horse of a different color