问题:
It was very dark. So he _______ the lights as soon as he entered the room.
[ ]
A. turned on
B. turned off
C. turns on
D. turns off
It was very dark. So he _______ the lights as soon as he entered the room.
B. turned off
C. turns on
D. turns off
[ ]
A. turned on B. turned off
C. turns on
D. turns off
参考答案: