—How long has Robert ___________?—Since 2004.—How long has Robert ___________?—Since 2004.A.been to Beijing B.become a policeman C.joined the art club D.studied in this school
问题描述：
—How long has Robert ___________?—Since 2004.
—How long has Robert ___________?—Since 2004.
A.been to Beijing B.become a policeman C.joined the art club D.studied in this school
答
D