1.In this day and age, we can get messages from different sources./ in different ways.
2.句子结构完整
E.g. Especially in this society, people are much busier than during the last century.
3.for a long time
4.live the sedentary lifestyle.
5.can they/ they can
e.g. Only when people do not have a lot of financial problems can they try to enjoy their life and achieve happiness.
6.numerous reasons/ a number of reasons.
