• 2022-06-06 问题

    Mysister,aninexperiencedrider,wasfoundsittingonthebicycle____________tobalanceit. A: havingtried B: trying C: totry D: Tried

    Mysister,aninexperiencedrider,wasfoundsittingonthebicycle____________tobalanceit. A: havingtried B: trying C: totry D: Tried

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