根据短文理解，选择正确答案。
    Bob works in an office. Every morning he has breakfast at seven thirty, reads his newspaper, drinks a cup of coffee and then goes to work. One morning, he is still at the table reading his newspaper at: 8 0'clock. He asks his wife for another cup of coffee. His wife asks him, “Aren't you going to the office today?” “The office?” He jumps up from his chair, "I think I am in the office."