Please choose the correct ending to complete the given sentence: Relationships: [header] How to practice courtesy and kindness [title] Hold open doors for people. [step] It may seem small, but it doesn't take a lot of time or effort, and someone holding open a door with a smile can make someone's day. Helping or just being courteous to other people can make you feel good about yourself.

Ending1: [title] In traffic, just keep reminding yourself that the person who just cut you off was probably having a bad day. [step] Let others in front of you when there is a back up. Ending2: Try buying a small fluffy comb and taking them out when they need it. Don't assume that you have to offer someone a big smile to walk through a crowd. Ending3: [substeps] Hold doors for people other than yourself, especially if that person is a friend or family member. If the person is a relative, you can close the door for the person. Ending4: [substeps] If you're in school, your classmates probably want to hold doors for them. Opening a door for them can become comfortable and respectful for other people.

Answer format: ending1/ending2/ending3/ending4