问题补充：
---Well, James, I’m sorry to leave at once.
---. I hope to hear from you again.
A. Stay a little longer
B. Keep in touch
C. Take your time
D. Don’t mention it
答案：
A. Stay a little longer
(答案→)B. Keep in touch
C. Take your time
D. Don’t mention it
解析：根据I hope to hear from you again.可知答案为 B。Keep in touch 保持联系；Take you time别慌；慢慢地来；Don’t mention it不用谢；A项不符合英语国家的表达习惯。
