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We had an anxious couple of weeks, ____ for the results of the experiment.
A.waitB.to be waitingC.waitedD.waiting
D

试题分析:考查现在分词做伴随状语:句意:我们几周都很焦虑,等待实验结果。逗号前面的是简单句,后面应该是非谓语动词做状语,we和wait是主动关系,用现在分词做伴随状语。选D。
点评:当分词做状语的时候,如果构成分词的动词与句子的主语构成主动关系,就使用现在分词做状语;当二者构成被动关系,使用过去分词做状语。如果分词的动作发生在谓语动词之前,就使用分词的完成式。如果分词与句子的主语没有关系,可以使用状语从句或者独立主格结构。
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