7. Se viste
8. Se arreglan
9. Su
10. Lava
11. Pasa
12. Duermen
13. Tu
14. Te preparas
How am I supposed to complete the dialogue logically to help you if there is nothing to complete, I don't wanna sound rude, I just want to help
Should/must
Deber means that you should/must do something
Yes the Aztec and Mayan ruins
Nositros no / llegar al centro comercial
-Nocotros no sabemos llegar a la residencia estudiantil
yo / el profesor de literatura
-Yo conozco al profesor de literatura
Elena y Maria Victoria / patinar en linea
-Elena y Maria Victoria saben patinar en linea
(Hope this helps although I don't know if they are correct)
Good luck.