Hablar y escribir son las dos actividades básicas de la

Human comunication/ Comuncación humana.

Explanation:

This can be translated to:

"Talking and writing are two basic activities of"

To complete this sentence we should use "communication" or "human communication".

in order to be able to talk or write something, we must have a language, which is not only the keystone of human communication, is also a keystone in the human evolution.

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