“Blind as a bat”

“Keep an eye on”

To watch or monitor carefully.

“As clear as mud”

Very confusing or not clear at all.

“Cry over spilled milk”

To be upset about something that cannot be changed.

“See eye to eye”

To agree completely.

“Cool as a cucumber”

Very calm, especially under pressure.

“Turn a blind eye”

To ignore something wrong or unpleasant on purpose.

“No pain, no gain”

You must work hard to achieve success.

“Bite off more than you can chew”

To take on too much responsibility.