to keep track of: to keep or maintain a record of; to remember the location
of
a bitter pill to swallow: unpleasant, but has to be acceptedExamples: Losing my job was initially a bitter pill to swallow. It’s a bitter pill to swallow but a difficult cure promises the best result.
to pay attention (to): to look at and listen to someone while they are speaking, to concentrate Examples of PAY ATTENTION (TO) I know I need to pay attention to you when you talk, but you’re just so boring! It’s important to pay attention when your boss is explaining your mistakes.
to take up: to begin to do or study, to undertake; to occupy space, time,or energy Examples of TO TAKE UP Prime Stage Theater’s offering takes up the challenge somewhat self-consciously. At 6-foot-3 he takes up nearly half of the room when he leans back in his chair.
to wait up for: to wait until late at night without going to bed Examples of TO WAIT UP FOR Would it be terribly rude to wait up for him to chat about his lawn maintenance? He said he waited up for a while, but then fell asleep.
to hear of: to know about, to be familiar with; to considerThe second definition is always used in the negative. Examples of TO HEAR OF Its also good to hear of someone who is successful giving back to the community. One woman, approached at a hamburger stand, seemed startled to hear of the case.
above all: mainly, especially Examples of ABOVE ALL The emperor demanded to be respected above all others in his retinue. When you’re under oath, above all, you must tell the truth.