Please choose the correct ending to complete the given sentence: Philosophy and Religion: [header] How to bring the right quality to human life [title] Be friendly to others. [step] We all have to be friendly to each other. We are all the same, all human, but all different to each other and being different is a good thing.

Ending1: Open doors for strangers or be friendly when meeting others. Most people should be accepted by them and not cross lines in order to make new friends. Ending2: We don't even look the same, so our personalities are all different too. We can't judge someone because they are different from us. Ending3: Stand face-to-face with your friendliest person and make eye contact. Smile flirtatiously and keep it for as long as you can get an audience. Ending4: Don't be strange or mean to other people unless they say " no " to you. Just be friendly when in need and never be rude or disrespectful.

Answer format: ending1/ending2/ending3/ending4