David talked with a friend of ________ on the Internet for a long time yesterday.
——What’s your ? ——I like swimming.
They often take walk after dinner.
——Who’s that man? Is he Mr. Brown?——That be Mr. Brown. He never walks this way.
——Hello,may I speak to Mary,plrase?—— .
——How many god medals did China at the 2010 Winter Olympics?——Five.