The Isgur-Wise functions for the ground state to ground state semilept
opic decays involving b-->c transitions are calculated from the (modif
ied) MIT bag model. It is checked that the results for the decays BBAR
-->DlnuBAR and BBAR-->DlnuBAR agree well with experiment. Predictions
for the decays LAMBDA(b)-->LAMBDA(c)lnuBAR, B(s)BAR-->D(s)lnuBAR and
B(s)BAR-->D(s)lnuBAR are given and discussed.