请问高手这个答案是什么,为什么?I_my history lesson yesterday.Now I _all the work for today.A.was reviewing;have done B.reviewed;have done C.was reviewing;had done D.reviewed;am doing

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请问高手这个答案是什么,为什么?I_my history lesson yesterday.Now I _all the work for today.A.was reviewing;have done B.reviewed;have done C.was reviewing;had done D.reviewed;am doing

请问高手这个答案是什么,为什么?I_my history lesson yesterday.Now I _all the work for today.A.was reviewing;have done B.reviewed;have done C.was reviewing;had done D.reviewed;am doing
请问高手这个答案是什么,为什么?
I_my history lesson yesterday.Now I _all the work for today.A.was reviewing;have done B.reviewed;have done C.was reviewing;had done D.reviewed;am doing

请问高手这个答案是什么,为什么?I_my history lesson yesterday.Now I _all the work for today.A.was reviewing;have done B.reviewed;have done C.was reviewing;had done D.reviewed;am doing
D
一般过去时,现在进行时