No, a recessive super to a recessive het will produce supers and 100% hets.
No, this pairing will produce 25% supers, 50% het and 25% normal. Because the 50% het and 25% normal look identical, they're all called 66% hets (2/3 = 66)
No, super to super produces all supers.
No, you produce 50% het and 50% normal. Again, because you can't tell the difference between the two, they're all called 50% hets.