Answer:
For regular -er verbs, just replace the -er with a -é.
2. avons marché (walked)
3. ont voyagé (travelled)
4. avons nagé (swam)
6. a essayé (tried)
8. ai parlé (talked)
9. ai oublié (forgot)
10. a mangé (ate)
For regular -ir verbs, just get rid of the r.
1. a aboli (abolished)
2. avons réfléchi (reflected)
3. ?
4. a obéi (obeyed)
5. As; fini (finished)
Explanation:
Please mark as Brainliest! :)