Please choose the correct ending to complete the given sentence: Relationships: [header] How to be kissable [title] Brush your teeth twice daily. [step] Brushing your teeth daily is necessary to maintain good dental hygiene, and it is especially important if you plan to be kissed. Brush your teeth at least twice a day-once in the morning and once at night.

Ending1: If brushing really bothers you, just make sure to brush your teeth every evening, especially after your meal. [substeps] If you absolutely must brush your teeth with shampoo, do so after you get out of the shower, after you eat, or while you brush your teeth. Ending2: Brushing will also keep your teeth clear, which will help keep your breath smelling fresh. [substeps] Never use mouthwash, and rinse your mouth out all morning. Ending3: You don't want to brush your teeth more than once a day, so brushing twice a day will help grind down any plaque and make your teeth look whiter. Brushing your teeth twice a day is a great way to keep your gums and teeth healthy as well as prevent whitening. Ending4: You may want to brush your teeth after lunch as well if you plant to kiss someone during the afternoon. [substeps] Use a whitening toothpaste when you brush to improve the appearance of your teeth.

Answer format: ending1/ending2/ending3/ending4