Why does the definite article "o" sometimes come before the "que"?

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How do you apply the masculine and feminine? Is it by speaker (ie. a man speaking uses the masculine regardless of who he is talking to), or it is who is being spoken to (ie. a man talking to a woman will use the feminine)?
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What is the Hebrew word for "they" if it is referring to a mixed gender group?
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How do you pronounce an Umlaut (ä, ö, ü) in German?
Nayane Bremm
¿Debo usar "could" o "can" para hacer preguntas?
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Introdução: Nayane Bremm
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What are some fruits and vegetables that have different names in different countries, like palta (Chile) vs aguacate (Mexico)?
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How do I use the present continuous in German? For example, phrases like "I am studying German now" or "They are talking to me"
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What's the difference between "du" and "Sie"?
Nayane Bremm
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