"I drink my soup."
Translation:Bevo la mia zuppa.
La corresponds with the feminine word zuppa. Il is only used with words such as cavallo.
The article la in "la mia zuppa" is necessary. I asked a friend who is a native speaker, and there must always be an article in a possessive sentence.
Ex: La zuppa è (la) mia Bevo la mia zuppa