摘要
1.A:Somebody is knocking;go and see who it is.B:Yes,sir (ma am).2.C:Is Mr.Brown at home? (or...your father,mother,brother,sister,etc.)E:Yes,sir.Please come in.(or:Come thisway,please.)or:B:I m sorry to say he s out.(or:Sorry to sayhe s not at home.or:Sorry to say he s
