请选择DCBA'N5V1s;c7M5Q)e,R7T)o-}.k6[.I:i Children should make____ for old people in a bus.'_:S*e+W1P(F/A
A. room'_:S*e+W1P(F/A
B. a room'_:S*e+W1P(F/A
C. rooms'_:S*e+W1P(F/A
D. the room'_:S*e+W1P(F/A