to knock one self out: to work very hard (sometimes too hard) to do something
A reflexive pronoun must divide the idiom.
to keep in touch with: to maintain contact with (also: to stay in touch with) Examples of TO KEEP IN TOUCH WITH Good managers are people you keep in touch with even after you leave a position. Once the Thanksgiving holiday passes, I promise to get in touch with all of you.
to knock out: to make unconscious; to impress or attract greatlyThis idiom can be made into the noun from knockout for both definitions. Examples of TO KNOCK OUT The prizefighter knocked out his opponent with one punch. The stone hit her on the head and knocked her out for a few minutes.
to get away with: to avoid punishment for Examples of TO GET AWAY WITH If this person steals your work or takes credit for your efforts, they will most likely not be able to get away with it forever. Why are the super rich allowed to get away with paying less tax than you and…
out of the question: impossible, not feasible Examples of OUT OF THE QUESTION Buying a new car is out of the question, especially before we pay off the old car. If we close this deal, a raise wouldn’t be out of the question for you!
to get in touch with: to communicate with, to contact Examples of TO GET IN TOUCH WITH It was nice signing up for Facebook because it helped me to get in touch with a lot of my old friends from grade school. I’ve tried calling you five times and you never answer – it’s impossible…
to put out: extinguish, to cause to stop functioning Examples of PUT OUT I decided to put out the light and go to sleep. We hope to put out a deluxe edition of the award-winning novel later this year.