— Can I e to ask for some advice at any time?
—Yes, of course. .
A. If you're convenient
B. At your convenience
C. Don't worry
D. Don't mention it
网友回答
A. If you're convenient
(答案→)B. At your convenience
C. Don't worry
D. Don't mention it
解析：本题考查交际用语。 “-我可以随时来征求你的建议吗？---当然可以， 只要你方便的话。”at your convenience 在你方便时。