"The teacher lives in the city."

Translation: 老师住在城市里。

[NasuSamaruk0]

老师住在城市 is also acceptable without including 里. Both sentences have the close meanings.

[robosquiggles]

I put this and was marked wrong. I agree that this should be accepted, but for my own betterment can you explain the different between with and without the “里”？