--It’s dark. _______ I _______ the light, Mr Wu? --Yes, please.
#60036
A
Can, open
B
May, open
C
May, turn on
D
May, turn off
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We should never ________till tomorrow what we can do today.
#59603
A
put on
B
put off
C
put up
D
put out
Don't make the students ______ too many exercises. It will make them ______. 
#56939
A
do, bored
B
to do, bored
C
do, boring
D
to do, boring