摘要： We all need knowledge from the past - it comes from personal experience or from studying history. It is our only guide to the future. A. as B. whether C. how D. when
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We all need knowledge from the past — ______ it comes from personal experience or from studying history. It is our only guide to the future.
A. as B. whether C. how D. when
查看习题详情和答案>>We all need knowledge from the past — ______ it comes from personal experience or from studying history. It is our only guide to the future.
A. as B. whether C. how D. when
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