◎ 题干
Sorry! I didn't notice you entering the room because I ______ a phone call.

[     ]

A. answered
B. had answered
C. was answering
D. has been answering
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Sorry! I didn't notice you entering the room because I ______ a phone call. [ ]A. answered B. had answered C. was answering D. has been answering …”主要考查了你对  【过去进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。