Yes,you can/may.
Of course you can.
Sorry,but.
I'm afraid you can't.
You'd better not.
Sure.
You mustn't do it.(表示禁止,不准)
Yes,please.
Yes,you can/may.
Of course you can.
Sorry,but.
I'm afraid you can't.
You'd better not.
Sure.
You mustn't do it.(表示禁止,不准)
Yes,please.