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    【题目】In order to stop the virus from spreading further, the scientist all possible ways to control it in the past few months. (explore)
    在过去的几个月里，这位科学家一直在探索所有可能的方法来控制这种病毒进一步扩散。

    【答案】has been exploring
    【解析】此句要用现在完成进行时。have／has been doing表示动作从过去某一时间开始，一直延续到现在，很可能还要延续下去。 in the past few months给出时间状语，所以答案是：has been exploring。

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