Okay let's learn some trinkets with the word "Keep"

1⃣ Keep a check on - to examine something regularly in order to make certain that it is correct or the way it should be 2⃣Keep a diary - to make a regular record of events or other information so that you can refer to it later.
3⃣Keep abreast of - keep up with, Stay or cause to stay up-to-date with.
4⃣Keep alert - paying full attention to things around you and are able to deal with anything that might happen.
5⃣Keep cool - Remain calm and under control
6⃣Keep down - to make something stay at a low level; to avoid increasing something. 7⃣Keep in check - to keep (something) under control
8⃣Keep in mind - linger in mind, not to forget, to remember, to consider (idiom)