Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to clean a gym floor [title] Sweep hardwood floors with a microfiber dust mop every morning. [step] This is called " dry-mopping. " dry-mopping will get rid of most of the dust and dirt that gets on the floors.

Ending1: There is no need to use this mop during the day when you won't be cleaning the floor. Just follow the grain-by-grain pattern you established during the earlier days of your gym. Ending2: Any time you sweep and mop hardwood floors, aim for clean-up time. [substeps] Check your gym's website to see what cleaning instructions they recommend for a specific floor. Ending3: After your gym floors are completely clean, sweep them again with a microfiber dust mop. [title] Turn the floor regularly to prevent spills. Ending4: By sweeping in the morning, you can get rid of any dust that has settled on the floor overnight before athletes come in to play. [substeps] Regular dust mops may not get rid of dirt effectively.

Answer format: ending1/ending2/ending3/ending4