I would just google all of these
La respuesta es recuerdos :D
Answer:
sorry, i don't the answer for the first question.
2. entendiste - aprendiste - bebiste - comiste
3. él come
4. ellos comieron
5. usted aprendió
I don't know the answer for the question number 6, sorry
7. él debía
8. nosotros bebimos
9. Yo aprendí español. - I learned Spanish.
I can't see question number 10
11. yo comí
12. yo debía
I would assume te someone else is asking someone, and then that someone is responding to that someone else. (That made absolutely no sense.)