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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 writingB．have wanted;wrote?
C．had wanted; wroteD．had wanted;was writing?
D　
考查動詞的時態(tài)。第一空表“本想干某事但卻未干成”,應(yīng)用過去完成時。第二空指過去某時正在進行的動作。
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