一个较难的高中英语单选题----高手帮忙
28、—Iwonderifyoucouldgotothemoviewithme.
—Oh,justleavemealone.I_____acompositionallthemorningandhaven’tfinishedyet.
A:writeB:waswritingC:havewrittenD:havebeenwriting
【考查知识点】时态
【译】
请按照要求回答,