问题描述：
有关状语从句
-------it rains ,the game will be played on time.
答案是Unless 为什么不可以是Though?
_____I was twenty,I had never been away from my hometown.
答案是Until,为什么不可以是Though?
-------it rains ,the game will be played on time.
答案是Unless 为什么不可以是Though?
_____I was twenty,I had never been away from my hometown.
答案是Until,为什么不可以是Though?
问题解答：
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