小学英语语法I am on the platform. You are in the classroom. He is in the school.There is a waterfall on the mountain. There are a lot of fireworks in the sky.There is a singer singing in the picture. There are three boys singing on the stage.There is a girl dancing on the ground. There are many People dancing in the hall. There is a waterfall on the mountain. There are a lot of fireworks in the sky. There is a singer singing in the picture. There are three boys singing on the stage. There is a girl da
