I thought about it for a few seconds, and the answer quickly came to my mind - it's the bell curve! )))

BTS Jin finally has been discharged from millitary today Do you know BTS? It is a worldly sensational Korean boy band. They are super duper popular all over the world. They have affected a large positive effect on the Korean economy, but, they couldn't avoid the duty as a Korean man. (The millitary service is not mandatory for Korean women.) Now, Jin is hitting the internet. He has a special event for fans tomorrow.

She wanted ...... yesterday.

This topic reminds me of another phenomena that more and more senior students continue to get a master degree after their four- year university life. Though a centain portion of them really want to get an advanced degree, most of them don't. Imagining that if they can get a great job after graduating from university, would all of them choose to start another academic life? You know that most of them have been studying for over 20 years since they began to meomrize words when they were little kids. This example can also explain that why more and more people making friends online. The purose of making friends definitely is to get respect and happiness from them, but more and more people just want to get benefits from others. Even this is the only rule for some people to make friends in reality. In that case, more and more people get tired of meet people in personal in such an internet era. They began to put their attention on internet. They just want to create a clean and nice environment to make friends which likes they did many year ago. Especially in a chat group, the owner can make a rule which asks every member to keep. They usually share the same interests. The owner can remove anyone out of the group whenever they break the rule.Usually any trades are banned in order to protect all the members from being defrauded. Everyone really likes the feeling of equity online. It sounds great!

Which one means VERY CLEAN?