听力原文：

G: Last week, my family and I went on a field trip. At night, we stayed in tents by the river. The next morning, my sister, Sally, got up early. When she looked out of the tent, she saw a big green snake sleeping near the tent. She was so scared that she couldn't move. I shouted to our dad. My dad jumped up and down in his tent. And then the snake moved into the grass slowly.

Question: How did Sally feel when she saw the snake?

参考答案：

She was so scared that she couldn't move.