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While building a tube through the mountain, _____. [ ]A. an underground lake was discovered B. there
题目简介
While building a tube through the mountain, _____. [ ]A. an underground lake was discovered B. there
题目详情
While building a tube through the mountain, _____.
[ ]
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
题目简介
While building a tube through the mountain, _____. [ ]A. an underground lake was discovered B. there
题目详情
B. there was an underground lake discovered
C. a lake was discovered underground
D. the workers discovered an underground lake
答案