On March 23, many people took part in “_
问题:
On March 23, many people took part in “_________ Lights” activity to help save energy.
A.Turn off
B.Show off
C.Take off
D.Put off
On March 23, many people took part in “_________ Lights” activity to help save energy.
A.Turn off
B.Show off
C.Take off
D.Put off