史书上有“国家根本，仰给东南”的说法，这种现象最早出现在哪一时期？
选择正确答案 （ 10 分 ）
What did you do _______ weekend ？
He jumped into the lake and______ to it .
I went to a park ______ bike .
You are 164cm , I’m 160cm , you are 4cm _____ than me.
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