根据短文,选择合适的单词填入短文下面的横线中。
knew learn first wrote clever put
How did Helen Keller (1)_________ to read and write? One day, her teacher (2)_________ the word “water” in Helen’s hand. And then she (3)_________ Helen’s hands in the water. She taught Helen again and again. Then Helen (4)_________ the word. So “water” was Helen’s (5)_________ word. She was very happy. She was (6)_________ so she learned very quickly.