For this part，you are allowed 30 minutes to write a short essay entitled About Keeping Indoors You should write at least 150 words following the outline given below.
1. 目前很多年轻人大部分时间喜欢“宅”在家里，很少外出进行户外活动
2. 对这种做法有人表示支持，也有人并不赞成
3. 我的观点

A．Because they are afraid to be laughed at by others.
B．Because they are not aware of the problems due to their slow progress.
C．Because they are too busy to go to hospital.
D．Because they are unwilling to talk about snoring problems，