Time1 lesson needs revision
The lesson for Time #1 is mainly just repeatedly translating Zero. Could you throw in some more numbers or time information? :D
But zero is the most important number!
It must have a lesson of its own. The other numbers are worthless in comparison. They all WISH they were as important as zero.
But they are not.
Speaking seriously for a moment, DuoLingo's randomizing algorithms get a little wonky at times. Try repeating the lesson to get a different mix of questions. There should be a few other numbers in there, I'm sure.
On the upside, I bet you know how to say Zero in Japanese now!