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– ________ you work hard, you won’t make progress in your study.
– I will, Miss Li.
A. If                       B. Unless                   C. Though
B

試題分析：A. If如果，B. Unless除非，C. Though盡管，make progress取得進步。句意：除非你努力學習，否則你不會在學習中取得進步。故選B。
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