One morning, Emma and May woke up to a strange sight. They couldn't see the big tree in their backyard. "Where did everything go?" May asked, worried. Emma explained, "It's just fog, May. It's like clouds on the ground." They decided to explore their foggy neighborhood. Holding hands, they walked slowly down the sidewalk. Familiar things looked different in the mist. A cat meowed nearby, but they couldn't see it. "It's like we're in a cloud!" May whispered excitedly. As they turned to head home, the sun began to break through. Slowly, the fog lifted, revealing their colorful world again. "Wow," said May, "fog is like nature playing hide and seek!" Emma smiled, "That's a great way to think about it, May!"
1. Why couldn't the girls see the big tree in their backyard?
2. How did Emma describe fog to May?
3. What did May think exploring in the fog was like?
4. What happened to the fog at the end of the story?