-I beg your pardon, but I didn't quite catch you. -Oh,I ____ my

-I beg your pardon, but I didn't quite catch you. -Oh,I ____ myself.
A、am talking to
B、talked about
C、have talked to
D、was talking to
【正确答案】：D
【题目解析】：【考点点击】本题考查过去进行体。【要点透析】过去进行体用来表示过去某一时刻正在进行的动作。本句意为:噢,我(刚才)只是在自言自语。