问题
选择题
At the meeting the boss was explaining his plan while his secretary_________ the notes.
A．is taking
B．was taking
C．has taken
D．takes
答案
答案：B
题目分析：句意：在会上这位老板正在解释他的计划这是他的秘书正在做笔记，while引导的时间状语从句主从句的时态同时进行，结合语境故选B