Reform has been vigorously opposed, perhaps most notoriously in education, （ ）charter schools, academies and merit pay all faced drawn-out battles.
A.正确答案Cwhich
B.that
C.where
D.when
Reform has been vigorously opposed, perhaps most notoriously in education, （ ）charter schools, academies and merit pay all faced drawn-out battles.
Reform has been vigorously opposed, perhaps most notoriously in education, （ ）charter schools, academies and merit pay all faced drawn-out battles.
A.正确答案Cwhich
B.that
C.where
D.when
