I, as an Englishman, would say KAY.
Keke (Kay-Kay)
Some pronounce it like Key and some pronounce it like Ki. Hope this helped!
mar-kay mar-kay
Kay-qe
Kay-9
KAY-oss
It is pronounced as "boo-kay."
Kay
Kay-free
Kay pee
pey -kay- ne -o - stressing on d kay
Po-kay-park