Though smoking is not allowed in the public places, many people are still in habit of smoking in the train or bus in public.
A. the；the
B. /；/
C. the；a
D. the；/
网友回答
A. the；the
B. /；/
C. the；a
(答案→)D. the；/
解析：in the habit of “有……的习惯”是固定结构；in public“公开地，公然地”，也是固定结构。