She is looking over the documents before the meeting.

He chewed over the problem for hours.

She is chewing over the decision.

He chews over the decision before making a choice.

I like to chew over my decisions before making them.

She is known for being over-zealous in her work.

Over-consumption of resources is a major environmental concern.

He keeled over after running a marathon.

He turned over the page of the book.

He turns over the page of the book.