Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to make soft drinks [title] Buy soda water. [step] Go to the grocery store and buy a liter or two of plain soda water. Look for a brand that doesn't contain sugar or any other additives.

Ending1: If you decide to buy bottled water, you should purchase at least half a liter. Opt for white water instead of anything with added sugar. Ending2: Choose an ingredient that won't upset your taste buds, like maple syrup. [substeps] Skip soda water if you have a milder taste. Ending3: All you need is plain, carbonated water. [substeps] If you have a carbonation machine at home, there's no need to get carbonated water at the store. Ending4: [substeps] If you can't find soda water, be sure to buy whole water. Most soda water bottles come with a spout at the back to allow you to pour the water directly into the bottle without spilling.

Answer format: ending1/ending2/ending3/ending4