问题
选择题
_____ weekdays, he often gets up _____ six o'clock. [ ]
A. On, at
B. At, on
C. On, in
D. At, at
答案
答案：A
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_____ weekdays, he often gets up _____ six o'clock. [ ]
A. On, at
B. At, on
C. On, in
D. At, at
答案：A