问题
选择题
— How long can I keep the books?
— _____ [ ]
A.Three.
B.Three times a day.
C.Three days.
D.Very often.
答案
答案：C
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— How long can I keep the books?
— _____ [ ]
A.Three.
B.Three times a day.
C.Three days.
D.Very often.
答案：C