WhenMarywastalkingtoherfriendorthephone,someoneknocked...

问题详情：

 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

知识点：动词

题型：选择题