"We improve our wine."

Translation: Nós melhoramos nossos vinhos.

[ka7th]

excpet its singular, not plural, so nosso vinho should be acceptable

[fernandoramires]

Exactly, Duolingo is totally wrong.

[BGMarc]

It is as at 12 June 2014

[BGMarc]

It is as at 12 June 2014

[africlubguy]

And still as of 24th September '14.

[AnastasiaO10]

AND still as of February 3rd 2015

[oliviaaandrade]

Still: 9 June 2015

[MyrleneGau]

Why is vinha an option if it is masculine!!!??

[UserBob]

O vinho : the wine.
A vinha : moisture condiment (eg. vinha d'alho). Vinha is not wine.

[derbyguy]

didn't say wines