Question

17. 一Has James finished his report on his enquiry learning yet?

―I'm not sure. He    on it last week.

A. was working      B. has worked

C. worked        D. had worked

Answer 1

17.   A考查动词的时态。句意："詹姆斯完成了他有关调查学习的报告了吗？""我不确定，上周他一直在从事这个工作。" 此处表示的是过去一周一直在做的事情，故用过去进行时。故选A。