听录音，补全短文中所缺的单词
Little Water Drop lives in the sea. It is raining. He wants to be ____
in the sky. The sun ____and he gets hot. Then he goes up to the sky. Now he is in a cloud. He flies ____rivers and mountains. He sees some thirsty ____. They need water. He falls down to the ____. A tree drinks him. Now he is inside the tree.
