题目

All her life, my mother wanted busy children. It was very important that her house should remain at all times clean and tidy. You could turn your back for a moment in my mother’s house, leave a half-written letter on the dining room table, a magazine open on the chair, and turn around to find that my mother had “put it back where it belonged,” as she explained. My wife, one of her first visits to my mother’s house, placed a packet of biscuits on an end table and went to the kitchen to fetch a drink. When she returned, she found the packet had been removed. Confused, she set down her dr（2008•荆州）解方程组