“No-brainer”

“Eat humble pie”

To admit that you were wrong.

“Every dog has its day”

Everyone gets a chance to succeed at some point.

“Fight fire with fire”

To use the same methods as your opponent.

“Fit as a fiddle”

Very healthy and strong.

“Give it a shot”

To try something.

“Fair and square”

Honestly and according to the rules.

“Fill someone’s shoes”

To take over someone’s role or responsibilities.

“Dog days”

The hottest days of summer.