请选择ABCD/s:t,i,j/`*A2a3g*i-z1f It’s very dark in the room. Please _______ the light.8}*B6s8N7t1?
A. turn on8}*B6s8N7t1?
B. open8}*B6s8N7t1?
C. turn off8}*B6s8N7t1?
D. switching on8}*B6s8N7t1?