I'm sure I've heard that phrase before; it rings a bell.

The new product was designed to meet a need in the market.

I strive to lead a happy life.

This is a once in a lifetime opportunity to travel the world.

I smell a rat.

Every cloud has a silver lining.

He finished the race as quick as a flash.

You should take his advice with a grain of salt.

I go to the beach once in a blue moon.

These cheap knockoffs are a dime a dozen.