问题补充：
--- Do you still smoke?
--- . It’s two years since I smoked.
A. No, I don’t
B. Yes, I do
C. Not too much
D. Oh, yes, but I wish I didn’t
答案：
(答案→)A. No, I don’t
B. Yes, I do
C. Not too much
D. Oh, yes, but I wish I didn’t
解析：It’s two years since I smoked. 我已经有两年不吸烟了。
