问题描述：
1,He has a good k＿ of chinese history.2,The shop is on the＿side of the rode.
1,He has a good k＿ ＿of chinese history.2,The shop is on the＿＿side of the rode.
1,He has a good k＿ ＿of chinese history.2,The shop is on the＿＿side of the rode.
问题解答：
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