to prevent someone from going to sleep

to move or progress at the same rate as someone or something else

to continue using or practicing something

(of situations or weather conditions) to continue without stopping

to maintain a house, garden, or property in good condition

to stay knowledgeable and informed about current events or developments in a specific field or area of interest

to maintain communication with someone

to continue a particular action or behavior

to regularly meet financial obligations or perform routine tasks to avoid problems