Where were you?
I was at the train station.
Watch
Watched
I wasn't at the gym.
I was at the airport.
Play
Played
I wasn't at the train station.
I was at the bus stop.
Miss
Missed
I wasn't at the gym.
I was at the playground.
Practice
Practiced
I wasn't at the amusement park.
I was at the skating rink.
Visited
I wasn't at the post office.