  We report the full control over the internal states of ultracold
$^{23}$Na$^{87}$Rb molecules, including vibrational, rotational and hyperfine
degrees of freedom. Starting from a sample of weakly bound Feshbach molecules,
we realize the creation of molecules in single hyperfine levels of both the
rovibrational ground and excited states with a high-efficiency and
high-resolution stimulated Raman adiabatic passage. Starting from the
rovibrational and hyperfine ground state, we demonstrate rotational and
hyperfine control with one- and two-photon microwave spectroscopy. This
achievement of fully controlling the molecular internal states paves the way to
study state dependent molecular collisions and state controlled chemical
reactions.
