Back again as the bottom few are proving rather elusive. Hoping Assistance with two of these three will help - the third one is just eluding me.
21D - Game bird with swallow in river (5,4)
G?E?T ?U?E
33D - Boss with pained expression when sports officials brought in some furniture (6, 5)
?????? ?????
&
50A - Show number thirteen - many sing with group that's dancing (7, 4, 10)
??????? ?H?N ?P?????I??