I need some help with the last few in the Giant Crossword and explanations pls

[cmb67pink]

1d. Swear nothing has been allowed to interrupt lessons (6)
16a. Either restrain or show one's annoyance (6)
21a. Thought a number were employed by (5)
39a. Short time it takes to waken a sleeper (5)
83a. Be aware they're not just buttons, say, in teddy's face
45d. They have news - or releases (6)

[Captain2]

1d Course = lesson (Curse + O)

[johnalex]

1d cOurse

[Captain2]

45 Owners = they have (anag of news or)

[johnalex]

21a M+used . . . M=1000

[bibblebub]

16a) bridle

[bibblebub]

that's a double definition by the way

how many letters for 83a?

[johnalex]

16a Temper . . . 2 meanings

[johnalex]

16a . . . prefer Bridle!

[cmb67pink]

83a 7 letters....( ive got R---i-e). The R is from 72d Fighting for the first, pivotal, point(STRIFE?)

[cmb67pink]

16a is Bridle, thanks

[johnalex]

83a Realise . . . "real eyes"

[johnalex]

72 yes Strife . . . . anag/first + E(ast)

[cmb67pink]

Thank you all,
Just one last one I missed.
75a Because the coop is shaky.(5) -I--E-

[johnalex]

39a Shake

[johnalex]

75a 5 or 6 letters?

[cmb67pink]

75a 5 letters

[cmb67pink]

sorry johnalex..75a -i-t-e-(5)

[cmb67pink]

done it again...-i-e- (5 letters)

[johnalex]

Thanks c'pink but clue shows -I--E-. Please clarify using ? for missing letters, always preferred especially on small screens. Ta! ja

[cmb67pink]

Johnalex -I-E- ( 5 letters)
The I comes from
67d. Made money from the murderer she'd imprisoned. (6,2) COINED IN
The E comes from
76d. Joins up with the Latin senor, about to dance (6) ENROLS