(as) easy as A, B, C

See: as easy as pie

• keep cards close to chest
• keep cards close to your chest
• keep chin up
• keep close watch on
• keep close watch on someone
• keep close watch on something
• keep company
• keep company with
• keep company with someone
• keep cool
• keep dark
• keep distance
• keep distance from
• keep distance from someone
• keep distance from something
• keep down
• keep ear to the ground
• keep end up
• keep eye in
• keep eye on
• keep eye on someone
• keep eye on something
• keep eye on the ball
• keep eyes peeled
• keep eyes peeled for