----Have they finished the project?
---- Yes. By the end of last month, they it. Now they on a new one.
A. had finished; are working
B. had finished; work
C. have finished; are working
D. have finished; work
网友回答
(答案→)A. had finished; are working
B. had finished; work
C. have finished; are working
D. have finished; work
解析：考查时态，第一空时间是By the end of last month，by+过去时间，要和过去完成时连用，第二空时间是now，用现在进行时，句意：--他们的计划完成了吗？--是，到上个月底为止，他们已经完成了。现在正从事新的计划。选A。