I don't if it is me being a bit dopey or today's crossword being a bit hard - perhaps a bit of both.  Anyway, I have three left for which any help will be gratefully received.
4 Across  Boy and girl penning a short composition  (8)  I have ?O?A?I??
8 Down  Marry Charlie - he has no wife (4)
  I have  ??L?  
(The last letter of 4 Across is the first letter of 8 Down)
24 Down Out of shape, inwardly upset (4)  I have  ?R?M