2038] While building a tunnel through the mountain, . [译文] 在大过山隧道的时候.工人们发现了这个地下湖. A. an underground lake was discovered B. there was an underground lake discovered C. a lake was discovered underground D. the workers discovered an underground lake [答案及简析] D. 现在分词短语作状语.那么这个句子的主语必须能发出这个分词短语动作的人. 【查看更多】
