Answer:
1- Yo presto atención a la clase.
2- Nosotros tomamos un examen.
3- Ellos buscan información en el internet.
Explanation:
If the conjugation is present (because you didn't add the indication of the assignment), then the answer is as above. Regular verbs in first person singular -yo- end with -o. In the second person plural -nosotros- it ends in -os. And in the third person plural, the verb ends in -an.
