One I missed. The following code for choice 5:
for x in dbase.keys():
print "%s:" % (x),
for y in dbase[x]:
if dbase[x].index(y) != len(dbase[x]) -1:
print "%s," % (y),
else:
print y
print"" Might be better written:
for key, list in dbase.items():
print key + ":"
print ",".join(list)
print