用动词的适当形式填空。 1. He's _____ ( play) football on the playground now. 2. Look! The students aren't running. They _____ _____ ( learn) the dragon b oat. 3. Let's _____ ( watch) the ballet this evening. 4. —_____ your father _____ ( listen) co the teacher? —Yes, he is. 5. My mother _____ ( cook) supper every day.