A．They want to stay home and do housework．
B．They do not have enough money．
C．They have too much work and not much free time．
D．They have more freedom than they did in the past．
A．It is the most important thing in people's life．
B．It influences people's career and daily life．
C．It has a large impact on the society nowadays．
D．It has become a social problem nowadays．
A．Change of tone．
B．Fluency in language．
C．Use of different types of words．
D．Proper explanation of thoughts．