—-I’m sorry , but I’m afraid I must be off now.

— I'm afraid I must --It‘s getting late.I'm afraid I must be going now.--OK.____ -It's geting late.I'm afraid I must be going now. -Ok.______ It's geting late.I'm afraid I must be going now --it's getting late.I'm afraid I must be going now. 1:I’m afraid I must be going now.2.Sit down,please.3.Heall!J Sorry,I’m afraid not I’m afraid you must 10.I'm afraid we must leave now.--- ________ . ---It's getting late .I am afraid I must be off now ----____ but may be 、I can’t 、I’m sorry “I really must be off now?