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¡ªWere you at home at 9£º00 last night?
¡ªYes£¬I ________ at that time.
A. take a shower B. took a shower
C. was taking a shower D. am taking a shower
C ¡¾½âÎö¡¿¾äÒ⣺¡ª¡ª×òÌìÍíÉÏ9µãÄãÔÚ¼ÒÂ𣿡ª¡ªÊǵģ¬ÔÚÄÇʱÎÒÔÚÏ´ÁÜÔ¡¡£¸ù¾Ýat that time.¿ÉÖªÓùýÈ¥½øÐÐʱ̬£»¹ÊÑ¡C
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