WhenMarywastalkingtoherfriendorthephone,someoneknocked...

問題詳情：

 When Mary was talking to her friend or the phone, someone knocked at the door. She had to ______ the conversation and answered the door.

  A. break off             B. break down          C. break into             D. break out

【回答】

A

知識點：動詞

題型：選擇題