Question

---Beg your pardon, please.I didn't quite catch what you said.

---Oh, I _____ to myself.

1. A.
   had talked
2. B.
   talking
3. C.
   talked
4. D.
   was talking

Answer 1

D
对方没听清楚，请求我把刚才的话再说一次。我答时说：哦，我那时在自言自语啊！说明对方没听清楚的原因。