请选择ABCD9t;B:@/^.o+@;THow __ do you brush your teeth? Three times a day..|(Z3E/l*q3J;v
A. many.|(Z3E/l*q3J;v
B. often.|(Z3E/l*q3J;v
C. times.|(Z3E/l*q3J;v
D. many times.|(Z3E/l*q3J;v