"Mi hermana necesita una oficina bonita."
Translation:My sister needs a pretty office.
You're not forced to use "pretty" here. You know that there are other words you could use to translate "bonita" to describe an office.
Pretty is a very unusual epithet in English for an office. I put 'attractive' and it was rejected. With duolingo one has to learn two lingos, their Spanish which i have to believe is correct, and their version of English to move to the next question... fair enough
Can't always translate Spanish into English well.
The important thing here is the Spanish sentence and what it means IN SPANISH and how the meaning is said IN SPANISH. The English sentence just exists to provide us with a clue about what the Spanish sentence means. That's all. We are not learning translation here. Duolingo is not teaching translation. It is teaching Spanish.
Just use Duolingo's stupid English sentence while understanding what the Spanish sentence is referring to a good looking office and how the Spanish sentence shows one how one would refer to it in Spanish.
It is a good looking office that is being talked about, which is "una officina bonita" in Spanish.