问题
选择题
— Excuse me. Is the library open all day?
— . Only from 8 a.m. to 4 p.m..
A．Yes, of course
B．That's right
C．Sorry, I'm not sure
D．Sorry, I'm afraid not
答案
答案：D
情景对话。由后句“只是从上午8点到下午4点”，前句意为“对不起，我恐怕不是的”，因此选D。