ở đâu

Etymology
🇰🇲.

Adverb

 * 1) where (is it being/doing/happening?)

Usage notes

 * The interrogative adverb ở đâu is placed at the end of a question, indicating a location only, not a motion.
 * The reply contains the location with the preposition (neutral) or  (formal) meaning "in" or "at".