Answer:
The correct word to choose to complete the sentence is:
Será.
- Carlos: ¡será maravilloso ir aquí!
Step-by-step explanation:
- The sentence tense is future. with this in mind the verb should be in the same tense (future).
- The verb in this case is: es (be/is).
- with all those things in mind we can put the verb es in the right tense. The future of es is: será