Please choose the correct ending to complete the given sentence: Relationships: [header] How to deal with common kissing issues [title] Brush your teeth. [step] One of the best and healthiest ways to avoid a kissing disaster is to brush your teeth. No one wants to kiss someone who still has food particles in between their teeth or has bad breath.

Ending1: Brushing can help prevent food particles from covering your whole mouth and could cause bad breath. Brushing also acts as a throat whitening treatment. Ending2: Brush your teeth without fluoride or toothpaste for at least 30 seconds before putting on your make up or any other display of any kind. This helps prevent bacteria from growing on the object of your kiss and make your breath fresher, which lessens the impact of cavities and bacteria. Ending3: That said, brushing your teeth might be a good thing, but brushing things like your teeth too frequently can cause mouth sores and fights with bad breath. [substeps] Brushing your teeth back and forth before a meal also helps breath move more easily and can also further assist with the development of bad breath. Ending4: [substeps] Don't forget to brush your tongue as well. Bacteria can build up on your tongue if it's not brushed regularly, which causes bad breath.

Answer format: ending1/ending2/ending3/ending4