“Call it a day”

“Draw a blank”

To fail to remember or find an answer.

“Fall flat”

To fail to have the intended effect.

“Good call”

A good decision.

“Cut it close”

To leave very little time before a deadline.

“Clear as day”

Very obvious or easy to understand.

“Night and day”

Completely different.

“Call a spade a spade”

To speak honestly and directly.

“Have a field day”

To enjoy an opportunity to criticize or take advantage.