问题补充:
--- I really enjoyed talking with you ---but I’m afraid I must be off now!
---.
A. My pleasure
B. Nice to see you
C. Sorry to trouble you
D. So long
答案:
A. My pleasure
B. Nice to see you
C. Sorry to trouble you
(答案→)D. So long
解析:句意:--我真的很喜欢和你交谈,但是恐怕我现在要走了。--再见。My pleasure别客气;Nice to see you见到你很高兴;Sorry to trouble you打扰了;So long再见。根据句意故选D。