to check up on: to examine with the purpose of determining condition (also: to check on)
The noun form checkup derives from this idiom.
to go wrong: to fail, to result badly
to keep up with: to have current knowledge of; to understand as an explanation
to serve (someone) right: to receive one's just punishment(S)
This idiom is usually used at the beginning of a sentence after the subject it.
to get away with: to avoid punishment for