Bonjour !
1) We aren't taking the bus to school, we are walking.
2) Ben and Anna aren't having fun, they are working on a project.
3) I am not trying to finish my homework, I am taking a break.
4) We aren't playing computer games, we are listening to music.
5) Abigail isn't having lunch, she is helping her dad.
J'espère t'avoir aidé. Bon courage !