夜深人静时,小刚同学一个人在小巷行走,总觉得有脚步声跟着自己,使他很害怕,这是为什么?

1. My father is an executive in his unit and my mother is a worker.
2. I like playing the flute in my spare time, reading books and listening to the music at midnight when everything is quiet down.
操作工有点抽象,所以直接翻译为工人.
第二句前面加了一个在闲暇时分（in my spare time)