—-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?