i sing too should be acceptable
Yes, but I think that they were trying to find the literal meaning of the sentence into pure Hindi but if you actually in India they would interpret it either way.
Could mean "I sing too"
Could this also mean "I sing also," or is this specifically adding to the list of things I do.
Does the sentence mean that others sing as well (as in German "Auch ich singe") or that, among other things, I also can sing ? As far as I know, bhî emphasizes the preceding word, so I believe the first meaning should apply. Right?
I sing also is also correct
Duolingo doesn't seem to agree with that...
I sing also isnthe same as I also sing. This is correct answer.
Old man you don't carry doulingo so you leave
I agree: I sing too should be correct too
I can't see any difference between my solution and doulingo's solution
Me too sing should be correct
No, because that really isn't English, you have to say I instead of me.