问题描述：
in an hour,we can travel to places ___ would.
in an hour,we can travel to places ___ would have taken our ancestors days to reach.
1.where
2.which
选什么,怎么分析的?
in an hour,we can travel to places ___ would have taken our ancestors days to reach.
1.where
2.which
选什么,怎么分析的?
问题解答：
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