-"Excuse me,is this Mr.Brown's office?"

-"Excuse me,is this Mr.Brown's office?" 英语8.-Excuse me, is this Mr Brown’s office? "Excuse me,is this Mr.Robinson's office?" Excuse me ,where is Mr.Brown's office sorry I don't know I__ Excuse me,Is this Mr Greeen's office?I'm sorry,but Mr Green —Excuse me. Where is Mr Green’s office? Excuse me,is Mr.Green in the office? —Excuse me, is Mr Green in the office? 2.--Is this Mr Smith's office? 单选--Is this Mr.White`s office,Mary? -Which office is Mr.Brown's?-The one ____window faces to the the excuse office where me post is