My sister, an inexperienced rider, was found sitting on the bicycle to balance it．——青夏教育精英家教网—

摘要：My sister, an inexperienced rider, was found sitting on the bicycle to balance it．

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My sister, an inexperienced rider, was found sitting on the bicycle ______to balance it.

My sister, an inexperienced rider, was found sitting on the bicycle______to balance it.

My sister，an inexperienced rider，was found sitting on the bicycle _________ to balance it．

　　A．having tried　　　　　　　B．trying

　　C．to try　　　　　　　　　　D．tried

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