Fire

2669: Partners in crime

Four pairs of unclued lights are all similarly linked.                 Across 5               Mark sample of class essays (6) 9               I’m beginning to like hot chap’s twinkling of an eye (10) 14            Beginning of oxidisation on iron container? (3) 17            One who chooses mixed ramen (5) 18            Of sound mind, regularly returns wearing gold ring (5) 20