Common Sense

　I think that common sense needs to us. Common sense is one of
　
etiquette. Also It is the necessities of life. There are many common
　
senses. For example, We have to stand in one row,when I use the toilet
　
or take a bus and so on . . . If we don't keep that, other people will be
　
damaged by noise. At home, we do greet. For example we say good
　
morning, or good evening. Greeting is the most basic. The last, keeping
　
the time is important too. So we must not be late every appointment.
　
For example, When we meet friends, and when we go to school. We have
　
to recognize common sence always.