题目内容
Many young people don’t work hard, and regret it later when the opportunity is gone. They only realize it _______ it is too late.
A. when B. before C. in case D. until
A
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题目内容
Many young people don’t work hard, and regret it later when the opportunity is gone. They only realize it _______ it is too late.
A. when B. before C. in case D. until
A