回首过往,我学到了一些经验教训。() A: Lookback,llearnsomelesson. B: Lookingback,llearnsomelessons. C: Lookedback,Ilearnedsomelesson. D: Lookingback,Ilearnedsomelessons.
回首过往,我学到了一些经验教训。() A: Lookback,llearnsomelesson. B: Lookingback,llearnsomelessons. C: Lookedback,Ilearnedsomelesson. D: Lookingback,Ilearnedsomelessons.
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