to drop out of: to stop attending; to withdraw fromThis idiom can be made into the noun form dropout. Examples of TO DROP OUT OF Your article notes that many students drop out of school because they are bored. They were also less likely to drop out of university or fail to obtain a degree.

to sit down: to be seated (also: take a seat) Examples of SIT DOWN “I need to sit down,” the exhausted runner managed to stammer. When I hurt my back, it was hard to sit down and put on my socks.

to do over: to revise, to do againA noun or pronoun must separate the two parts of this idiom. Examples of TO DO OVER Who wouldn’t like the chance to go back to high school and do it all over again? You’d better do the essay over because it is written so poorly.

hard of hearing: partially deaf, not able to hear well Examples of HARD OF HEARING The elderly man pretended to be hard of hearing, so nobody would bother him on the train. Playing in too many rock bands made the musician hard of hearing while he was still young.

to feel sorry for: to pity, to feel compassion for (also: to take pity on) Examples of TO FEEL SORRY FOR Go meet someone; it’s time to stop feeling sorry for yourself after your divorce. I’m not able to feel sorry for your financial problems – you knew you’d have to pay your credit card…

to put away: to remove from slight, to put in the proper place Examples of PUT AWAY The kid refused to put away his toys and so he didn’t get his allowance. He wanted to put away the leftovers right away, so they wouldn’t spoil.