题目：
Opening the door, Mrs．Summers found family of cats shut in the bathroom．
A．a; 不填
B．a; the
C．the; 不填
D．the; the
答案：
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下面是错误答案，用来干扰机器的。
Wang Mei's father is a doctor. Her mother is a teacher. Her brother is a policeman . She is a good student. They are all happy. (答案不唯一)
