Stuck on these, some help will be appreciated, please:
17 a City guides in conversation (5) S?E??
21a Killing time, polecats mauled mollusk(7):E????O?
27 a Greatest possible bird unsurpassed hitherto(7, hyphened):E??????E?
8d Troubleshooters(shooters with a difference) (9): ?ES??????
31d Carried by horse is able one-time top Tory(6, two words):??CAN?