Mike     his computer and checked his e-mail.
#54405
A
turned on
B
turned off
C
turned up
D
turned down
推荐题目
If you want to listen to music, please _______ the radio first. 
#56136
A
get off
B
get on
C
turn off
D
turn on
She prefers ________at the party rather than______.
#54638
A
to sing; dance
B
to sing ; dancing
C
sing; to dance
D
sing ;dance
It  is better to ____ the lights before you leave here.
#58712
A
put out
B
put off
C
put on
D
put up