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.
Answer:
When a feminine singular noun begins with a stressed –a or –ha, the masculine article un or el is used instead the feminine una or la, to aide in pronunciation. When the same noun is plural, the feminine article unas or las is used. The following feminine nouns use the masculine article when singular.
Explanation:
When a feminine singular noun begins with a stressed –a or –ha, the masculine article un or el is used instead the feminine una or la, to aide in pronunciation. When the same noun is plural, the feminine article unas or las is used. The following feminine nouns use the masculine article when singular.
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