Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean concrete steps [title] Sweep the steps. [step] Use a broom to sweep away dirt and debris from the concrete steps. Sweep the steps until they are completely free of dirt and debris.

Ending1: Hold the broom at a 45 degree angle to the concrete steps and sweep at a steady speed. [title] Use a concrete rake to get into crevices. Ending2: A sweep is especially good for concrete steps that have already been dusted, since dirt and debris will be removed easily. [substeps] If you don't own a broom that you can use on concrete steps, you may be able to rent one for your home. Ending3: This will prep the concrete for the cleaning process. [substeps] Alternatively, you can use a leaf blower to remove dirt and debris from the steps. Ending4: You don't have to remove the concrete steps completely, just find the areas around the concrete. Broom debris should be clearly visible when you are finished.

Answer format: ending1/ending2/ending3/ending4