“Make hay while the sun shines”

“Cook the books”

To dishonestly change financial records.

“Make the best of it”

To do the best possible in a difficult situation.

“Carry the day”

To win or succeed.

“Hear it through the grapevine”

To hear news unofficially from other people.

“Grease the wheels”

To make a process easier or faster.

“Go the whole hog”

To do something completely, not partly.

“Drive someone up the wall”

To make someone very annoyed or angry.

“Make waves”

To cause attention, change, or trouble.