Cryptic

[terrya]

Greet the last one sitting in the back seat. (4) ??E? Master of ceremonies to approach each entrant (7) ????E?E Pupil to step out of position. (5) ?L???

[Toorak]

3 place l inside pace (step)

[Toorak]

1 weep (on)e inside pew reversed

[Lie-in King]

Weep (Scot. "greet") - '(th)e' (last one, in) 'pew' (back)
Compere - 'come' (approach) + 'per' (each, [as] entrant; inside)
Place (position) - 'pace' (step, out[side] of) 'l(earner)' (pupil)

[terrya]

Thanks