-----Didyouhearsomeoneknockatthedoorjustnow?-----Sorry,...

問題詳情：

-----Did you hear someone knock at the door just now?

-----Sorry, I           to my friend on the phone.

A.  was talking           B. talked            C. am talking

【回答】

A

知識點：動詞和動詞短語

題型：選擇題