Much hard he tried.he flailed to catch up with the first runner. A. although B. as ——青夏教育精英家教网—

摘要： Much hard he tried.he flailed to catch up with the first runner. A. although B. as C. while D. when

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Much hard ________ he tried，he flailed to catch up with the first runner.

A. although B. as C. while D. when

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