--Is this Mr.white`s office,Mary?为什么选C不选A

--Is this Mr.white`s office,Mary?为什么选C不选A 单选--Is this Mr.White`s office,Mary? hello'this is mary.hello this mr white peter's father. Mary:hello,this is Mary.Mr white :hello,this Mr white peter' what’s her name?A her is mary B It's mary C mary.为什么选c? 2.--Is this Mr Smith's office? 完型填空  Mr White is a member of his office.He’s__1__and c Mary's father is Mr Green.Mary's husband is Mr White.we can 说明为什么选This is my _____ dictionary.A sister's B sister,Mary's (At Mr.White's office in a middle school) is _____ you,Mary?A it B she C that D this 选哪个,为什么? where is mary At_ A mr.brown's B the browns C Mr.Browns DThe