I smoke out of habit, not for pleasure; for I have been in the habit for twenty years.
A. a; the
B. the; a
C. x; the
D. x; x
网友回答
A. a; the
B. the; a
C. x; the
(答案→)D. x; x
解析：该题考查冠词的用法。out of habit＝by habit是固定短语，意为“出于习惯，潜意识地”。for pleasure意为“为享乐，为消遣”，也是固定短语。