Final three clues. Please put me out of my misery!
7a. Trendy outfit? Hot! (5,2) I have ?I?H? O?
24a. Country in East Asia lacking capital.(7) I have ?S?O?I?
5d. Stone lost by one visiting speaker.(6) I have ?O?G?H The H comes from 13a., for which I have NEOPHYTE which might well be wrong.