问题补充：
—I say, Harry. What did you say to the laid-off worker just now?
—Nothing. I to myself.
A. had only talked
B. am only talking
C. have just talked
D. was just talking
答案：
A. had only talked
B. am only talking
C. have just talked
(答案→)D. was just talking
解析：表示“我刚才说话时是在自言自语” 。
