Question

3. Tienes que registrarte ante

4. Puedes abrir la puerta de tu cuarto con
5. Los cuartos en el hotel son

Answer 1

3. You need to register before... (You could say "de el o ella" [before him or her])

4. Could you open the door of your room with... (You could say "con cuidado" [carefully])

5. The rooms in the hotel are... (You could say "muy grandes" [very big])

Step-by-step explanation: