选出你所听到的句子。 (1)A.Point to the door. B.Point to a door C.Point to a desk. (2)A.Please sit down. B.Please stand up C.Sit down,please. (3)A.Good morning. B.Goodbye. C.Good afternoon. (4)A.I am fine. B.I am Daming. C.I am OK. (5)A.How are you? B.How old are you? C.Hello.