Because I do not know the context of what is "cool," I am going to assume that is referring to the weather/temperature.
In Spanish, we use the verb "hacer" in expressions that refer to weather conditions.
The direct translation of "It is cool," is:
Hace fresco.
We use the third singular form of the verb hacer because we are talking about the weather.
Cuando los países están en conflicto armado están en ______. guerra. El ______ comete crímenes para causar terror en la gente. terrorista.
In fact the letters were not letters. They were roman numerals.Looks like the numbers are coordinates, Carolina. You are right. Maybe it's the coordinates to find the treasure. The girls decided to find the coordinates. They came to a long hallway and opened the door to the hallway. As they opened it, the Pirates had already arrived.
Espero haber ayudado!