题目内容

20．Have you seen my dog？I        for it and still haven't found it．（　　）
A．lookedB．was looking
C．have been lookingD．had been looking

分析 你看到我的狗了吗？我一直在找它但仍然还没有找到．

解答 答案：C．
根据句意"你看到我的狗了吗？我一直在找它但仍然还没有找到．"可知，look for这个动作已经开始，一直延续到现在而且还将继续延续下去，所以应该用现在完成进行时，故选C．

点评 本题考查时态．时态题关键在于对句意的理解，要根据上下文，找到符合语境的答案．

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