'Keep on' means...
Be in charge
Continue
Talk to someone and delay them
'Keep from' means...
Control yourself, refrain
Steal
Find a target and head for it
'Keep up at' means...
Take or grab hold of something
Continue, not quit
Start a computer
'Keep up with' means...
Stop resisting or refusing
An imperative used to attract people to a public event
Stay up to date
'Keep back' means...
Maintain a safe distance
Eat a big meal
Forward a film or tape to a certain point
'Keep off' means...
Not talk about
Operate but without moving (engines)
Tease, deceive
'Keep around' means...
Approach, get near
Obtain insurance
Keep something near you
'Keep to' means...
Leave the top deck of a ship
Close a particular computer program that requires a name and password
Stay within limits
'Keep up' means...
Tune a musical instrument before playing
Stop light from entering or leaving
Maintain a continuous action, persist
'Keep down' means...
Destroy an argument, theory, etc
Not vomit
Study something quickly, revise