请选择CBA*H3M*F I usually go to school seven the morning.-Q:[.m9x1e9M(r1x)F
A. at, on-Q:[.m9x1e9M(r1x)F
B. at, in-Q:[.m9x1e9M(r1x)F
C. about, on-Q:[.m9x1e9M(r1x)F