阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写一个适当的词，在给出提示词的空白处用括号内所给词的正确形式填空。

Then one day, Anne took Helen out to the well. Anne put Helen's hand the water. As the water flowed over one hand, Anne (spell) "w-a-t-e-r" into the other hand. Then (sudden), Helen had a burst of understanding; the movement of the (finger) meant the cool water flowing over her hand. This precious knowledge gave her hope and joy. Finally, the world of words was opening up to her.