【正文】
ing ing ing ing ing e e e e e buy ing 4 painting eating writing running studying playing She’s painting. She’s eating. He’s writing. She is running. He is studying. He is playing. The girl is painting. The girl is eating. The boy is writing. The girl is running. The boy is studying. The boy is playing. 5 smil ing draw ing cry ing They’re drawing. They’re laughing. They are crying. They’re smiling. The boys are drawing. The children are laughing. The boys are crying. The boys are smiling. They are flying. The birds are flying. They’re singing. The girls are singing. sing ing fly ing laugh ing 6 2 1 3 4 5 6 7 8 9 10 11 12 …is/are… What is/are… doing? 7 1 6 2 7 I’m playing. What are you doing? drawing flying studying painting c