Across: 1.opal, 4.moon, 7.re, 8.IPO, 10.no, 11.april, 13.Obi, 15.aim, 17.bravest, 18.ace, 19.ESP, 21.deter, 24.IV, 26.new, 27.an, 28.died, 29.east

Down: 1.oreo, 2.PE, 3.lip, 4.moi, 5.on, 6.norm, 9.private, 11.aired, 12.laser, 14.BBC, 16.its, 18.acid, 20.pint, 22.end, 23.ewe, 25.VI, 27.as