题目内容
【题目】How can they learn so much ______ they spend such a lot of time hanging about?
A. although B. when
C. before D. until
【答案】B
【解析】
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题目内容
【题目】How can they learn so much ______ they spend such a lot of time hanging about?
A. although B. when
C. before D. until
【答案】B
【解析】