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

问题补充：

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. had wanted; was writing

C. had wanted; wrote

D. have wanted; wrote

答案：

A. wanted; have been writing

(答案→)B. had wanted; was writing

C. had wanted; wrote

D. have wanted; wrote

解析：考查时态。had wanted本想要。根据时间状语last night及I’ll have to finish it today说过去一直在做，故用过去进行时，选B。