Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to repair grout [title] Clean the damaged grout with white vinegar and water. [step] That way you can see the exact color of the grout and buy new grout that matches it. Mix one part white vinegar and one part water in a bowl or bucket.

Ending1: Make sure to stir the mixture well to ensure that the vinegar and water is well blended. [substeps] If you plan to use the grout in a shower, skip this step if you intend to use it for washing your legs. Ending2: Dip a sponge in the vinegar and roll it over the affected grout. Then, wipe the floor again with a clean sponge. Ending3: Then, dip a piece of old t-shirt into the vinegar. Use a sponge dipped in white vinegar to scrub the ceiling. Ending4: Then, dip a clean toothbrush in the mixture and scrub the damaged grout until all the dirt and grime comes off. Wipe away the excess mixture with a cloth.

Answer format: ending1/ending2/ending3/ending4