The other frogs kept telling them to stop,saying that it was almost impossible for them to makeitThe other frogs kept telling them to stop,saying that it was almost impossible for them to make it.中say
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作kept telling 的伴随状语.
======以下答案可供参考======
供参考答案1:
saying的主语就是青蛙们，青蛙们说这几乎是不可能成功的。