Where I'm from we use xanh có
Bananas is green? Shouldn't it bee bananas are?
There's no plural here. The banana is green.
But the app says the answer is "Bananas is green". Definitely a typo
They've corrected it.
No they haven't
Maybe different on different app versions? Mine looks corrected.
How to use the word quả?
Quả is a classifier for fruit or small ball-like objects.