________ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise. 
#92267
A
Freed
B
Freeing
C
To free
D
Having freed
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___ the room, the nurse found the tape-recorder ___. 
#95593
A
Entering; stealing
B
Entering; gone
C
To have entered; being stolen
D
Having entered; to be stolen
The power station keeps the villages ______ with electricity.
#97421
A
supplied
B
to supply
C
supplying
D
having supplied