1.In this day and age, we can get messages from different sources./ in different ways.

2.句子結(jié)構(gòu)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.