Four left to go, assuming I have the others right. It's been a struggle. Please help me!
12A Start of home address, but not all, for hero's friend, tragically. (7) --R-T-O
24A Noises of disapproval one has for Africans. (6) ----I-
11D Athlete's attempt to join club. (10) ---T-U---R
20D. About time to take army regularly to islands, on this? (9) C---M-R-N
Thank you very much.