Please choose the correct ending to complete the given sentence: Health: [header] How to avoid smiling at inappropriate times [title] Ask a friend if they've noticed your inappropriate smile. [step] Choose someone who you've been in some uncomfortable situations with. These are most likely to be the times you've smiled inappropriately.

Ending1: Say something like, " i'm trying to practice looking your best. Do you think maybe i could do a reverse smile? " [title] Communicate your mistake. Ending2: Talk to a mutual friend or family member in case one of them has noticed your inappropriate smiling. [substeps] If someone you talk to says something like, " hello, joe. Ending3: [substeps] Even if you're positive that you smile inappropriately, it's good to ask a friend. They might not have noticed, or the problem may not be as bad as you think. Ending4: This may be a stranger at work or on a bus ride. Or perhaps it's your teacher or a colleague from class.

Answer format: ending1/ending2/ending3/ending4