Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to tile over tile [title] Check for loose tiles. [step] Lightly tap on each old tile with a wood mallet. If the sound is solid, the tile is fine.

Ending1: If the sound seems hollow, the tile is loose and needs to be fixed. [substeps] Chip away the old caulk or grout around the tile and use a crowbar to lift up the old tile. Ending2: If it's not, use your fingers to dig deeper. You'll need to try a second tile after measuring it and moving it over any loose tiles. Ending3: If there are loose tiles, they'll need to be replaced. [substeps] Splitting a tile by breaking it over tile will give the whole room a shiny appearance and uniformity. Ending4: [substeps] Tile dissolves as new tile comes in. If you're replacing tiles most of the time, you can still fix the gap by stripping newly repaired tiles out.

Answer format: ending1/ending2/ending3/ending4