题目内容
5．I my homewok last night，but I haven't finished it yet．（ ）| A． | did | B． | do | C． | have done | D． | was doing |
分析 昨晚我在做作业，但我还没有完成．
解答 答案：D，考查句子时态的运用，根据I haven't finished it yet可知动作没结束，因此不能用一般过去时，根据时间状语last night可知表示的是过去某个时间正在做的动作，因此使用过去进行时，故答案为D．
点评 考查句子时态，要分析句子结构，根据语境对答案进行确定．
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