用适当的介词填空1.He is beaten to the ground

用适当的介词填空
1.He is beaten to the ground __a blow.2.David absented himself from the meeting for his throat was __ the weather.3.The incident was over,but the memory lingered __.4.The discrepancy __ their ages didn’t affect their love.5.He mused __ how different his life would have been,had he not missed the job.6.Surf the Web daily if you want to keep abreast __ the times.7.Sometimes life is going to hit you in the head __ a brick.8.The apple doesn’t fall far __ the tree.9.She is born with a silver __ her mouth.10.One act of random kindness __ a time.

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再问： 第五个为什么是about啊？谢谢！
再答： 固定搭配，仔细思考