--- I beg your pardon but I didn’t quite catch you.　--- Oh I myself.A. am talking toB.

问题补充：

--- 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

答案：

A. am talking to

B. talked about

C. have talked to

(答案→)D. was talking to

解析：Oh, I was talking to myself.意为“噢，我（刚才）只是在自言自语”。