BythattimeDrBethuneandhisteam

发布时间：2020-07-27 23:04:25

By that time Dr Bethune and his team________in the temple for two hours．A.were alreadyB.are alreadyC.had already beenD.have already been

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C解析分析：要把by that time/already/be动词和表示持续的时间长度fortwo hours综合起来考虑，应该选C项。
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