问题详情

Student: How long can I have these books？
Librarian: This one is on the three-hour-loan; you may have it for only three hours ______.
A: The others are due in 30 days, on February 3.
B: You may have it longer if you like.
C: Drop the books into the RETURN boxes by the library entrance.
D: The fine for overdue books is 5 dollars an hour.