I to help you but I was not able to spare any time.I a paper last night and I'll have t

问题补充：

I to help you but I was not able to spare any time.I a paper last night and Ill have to finish it today.

A. wanted; have been writing

B. have wanted;wrote

C. had wanted; wrote

D. had wanted;was writing

答案：

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。