Solution:
They smiled because they were happy.
Amy and Hana woke up early on Monday. There was a loud noise out in the street. It was the plow going by! There was snow outside. Then there was a knock on the twins’ door. “There’s no school today!” said Mom. The girls smiled. “Then let’s go outside,” they said.
Why did Amy and Hana smile after they learned school was closed?
They smiled because they were happy.