I to help you but I was not able to spare any time.I a paper last night and I'll have to finish it today.
A. wanted; have been writing
B. have wanted;wrote
C. had wanted; wrote
D. had wanted;was writing
网友回答
A. wanted; have been writing
B. have wanted;wrote
C. had wanted; wrote
(答案→)D. had wanted;was writing
解析： 考查动词的时态。第一空表“本想干某事但却未干成”,应用过去完成时。第二空指过去某时正在进行的动作。