A．To release the negative emotion．
B．To relax ourselves．
C．To feel more comfortable．
D．To have a short break．

A．Looking down upon it．
B．Doing something else．
C．Giving it space and attention．
D．Getting some amusement．

A．It is more dangerous．
B．It is much easier to do．
C．It is hard to find a proper place for it．
D．It takes much shorter time to get pleasure．