问题补充：
– Could you stay here a little longer?
-- , but I have to go back right now.
A. Yes, I could
B. I’d love to
C. I don’t think so
D. No, thank you
答案：
A. Yes, I could
(答案→)B. I’d love to
C. I don’t think so
D. No, thank you
解析：句意：你能在这里多呆一会儿吗？，但是我现在必须回去。Yes, I could是的，我能；I’d love to我乐意；I don’t think so 我不这样认为。 No, thank you不，谢谢你。根据but I have to go back right now.可知该选B。
