1.The dreams take up about one quarter of our sleeping time.
2.Because they may have been thinking about their work all day.
3.NO.People often forget the dream.
4.Too much dreaming is bad for our health
5.Dreams are caused by our thinking,and too many dreams will be bad for our health.
看你的英语程度很低.是学校的题目吧.必须像我给你的那样 回答完整.回答时候加上题干一起回答.不要像楼上那样随便写.