Bin ich zu früh?
Definitely. Everything before spot on time would be termed 'zu früh'
I really want to write "Komme ich zu früh", but I already know Duolingo prefers word for word translations above idomatically correct phrases
Idiomatically speaking, it rather ought to be Bin ich früh dran?
Why not Ich bin früh
Bin ich früh. Was ist das für ein Satz?
What are these questions? So many of the concepts here have not been introduced in lessons? What on earth is going on here? Why aren't the tests linked to your place in the learning process?