Solución ERR.5.2.1.

Solución:

1. What does the hotel need to be a good choice?
d. It needs to be spacious and have a great view.

2. What must the passport have before the trip?
a. It needs to be valid and ready for the trip.

3. What does the beach need to maintain its beauty?
d. It needs to be cleaned regularly.

4. What should be clear about the pool?
a. Drips of water may fall from the pool.

5. What does the cruise need before a trip?
b. It needs to be organized.