- When he was a little boy,he ______ on the farm.
#83309
A
used to working
B
used to work
C
got used to work
D
was used to work
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When   the future, many people will imagine a life    high-tech devices.
#70898
A
thinking of, full of
B
thought about, full of
C
thought of, filled with
D
thinking about, filled with
Wastes from the factory ______the water pollution in this area. 
#72065
A
resulted from
B
paid off
C
paid back
D
resulted in