13. (单选题) She works about seven hours a day, and continues to work while ____.(本题5.0分) A、 in holiday B、 up holiday C、 at holiday D、 on holiday
13. (单选题) She works about seven hours a day, and continues to work while ____.(本题5.0分)
A、 in holiday
B、 up holiday
C、 at holiday
D、 on holiday
发布时间：2025-09-11 09:08:48
