Across
1 Ice over (6) 4 Cheap (anag) (5) 8 Form of water (5) 9 Soft, not severe (7) 10 Flow 11 Rice drink (4) 12 Affirmative (3) 14 Pack away (4) 15 Encourage (4) 18 The day before (3) 21 Informed (4) 23 Reply (7) 25 Placards, stickers (7) 26 Viper (5) 27 Call to mind (5) 28 Alcove; adjournment (6)