请选择CBA'W5i0]9Q2\:O8` The office building _____ the classrooms.1\/C:m(i:]3s3n4n(h:n;U1J.X2T2h:A4L-O
A.behind1\/C:m(i:]3s3n4n(h:n;U1J.X2T2h:A4L-O
B.behinds1\/C:m(i:]3s3n4n(h:n;U1J.X2T2h:A4L-O
C.is behind1\/C:m(i:]3s3n4n(h:n;U1J.X2T2h:A4L-O