14a powerful,successful (4-6) huge?------ 20a using more than one means of expression (5-5)-i-e- media 23a investigative committee (8)-r-b-n-- 28a praise enthusiastically (2,3,5) t---e-k-e- 5d beneifit, successful result (3-3) 6d bringing into service (10) -e-l---e-t