请选择CBA'X(D,z;G)r.P4W.r0z4E+bI often ______ to school.5B*t4X1S9E(T4U2N8P
A. walk5B*t4X1S9E(T4U2N8P
B. walking5B*t4X1S9E(T4U2N8P
C. walked5B*t4X1S9E(T4U2N8P