24. --Has James finished his report on his Enquiry Learning yet?
--I’m not sure. She _________ on it last week.
A
was working
B
has worked
C
worked
D
had worked
过去进行时还可以表示过去发生的动作仍在继续，结构为 was/were + doing；故选项A正确。
根据答句“I’m not sure”可知，之前提到的动作目前依然在继续。
对过去进行时的定义不清楚致错 。