Answer :
Bonsoir,
Nous allons à
San Francisco la semaine prochaine.
The appropriate preposition in the sentence will be Nous allons a San Francisco la semaine prochaine.
What is a preposition?
It should be noted that a preposition simply means the words that are used to show direction, time, location, etc.
Prepositions are used to express spatial relationships between words.
Learn more about preposition on:
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