I am ( 1 ) American girl.My name is Lucy.I am a new middle s

I am ( 1 ) American girl.My name is Lucy.I am a new middle school student.I am
( 2 ).Now I am in Class Six ,Grade one .My ( 3 ) is Miss Gao .I have a sister.
( 1 ) A.a B.an C.the D./
( 2 )A.thirteen B.Twelve C.eight D.six
( 3 )A.name B.teacher C.friend D.classmate
填空,并说出理由