1. they / listen / to music2. we / eat / dinner at dinner 3. she / play / tennis in the park4. we / study / snakes at school5. you / write / an email in English 6. they / visit / some friends 7. he / look / at the teacher ​

1. They aren't listening to music
2. We are eating dinner at home
3. She is playing tennis in the park
4. We aren't studying snakes at school
5. You aren't writing an email in english
6. They are visiting some friends
7. He is looking at the teacher

По образцу я поняла, что предложения надо составлять во времени Present Continuous, поэтому не стала писать предложения в Present Simple.