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18.-I wonder if you could go to the movie with me.
-Oh,just leave me alone.I _______ a composition all the morning and haven't finished yet.(  )
A.writeB.was writing
C.have writtenD.have been writing

分析 --我想你能否和我一起去看电影.
--哦,不要烦我.我整个早晨都在写作文,还没有写好.

解答 答案是D.本题考查现在完成进行时.现在完成进行时表示动作一直在进行,没有间断,暗示动作还在进行中;而完成时表明动作已经结束;根据语境可知,说话人还在写作文,故选D.

点评 完成进行时的解题首先要理解其时态的基本用法--动作一直在进行,没有间断,同时关注其"在进行中"的特征;然后在语境中寻找动作的时间依据进行判断.

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