"Please sit on a chair."

Translation: いすにすわってください。

[Falcon198016]

椅子に座ってください。

[jay.hammer]

I really wish duolingo would teach us more kanji. It feels like an incomplete progress, only being able to read the kana script.

[DavidKames]

There are better apps and methods for learning kanji. This app is more of a vocab and grammar guide.
wanikani is great! there are also dictionary/flashcard apps like kanji study and if you have android i highly recommend takoboto

[Starclove]

Like a civilized person, Duo, not on the table like a savage.

[Shiinoko]

Why に instead of 'o'

[scruffy]

It refers to the location you're being asked to sit in.

[Mirson8]

what is the difference between "すわりますください" and
"すわってください"?

[IsolaCiao]

It's not possible to say the first, you must change the "-masu" form of the verb to the "-te" form if you want to use it with "kudasai". すわってください