It's ten years since the scientist _______to discover the valuable chemical.
#13947
A
kept up
B
set out
C
took in
D
set about
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 The deadly accident _____ his careless driving.
#12950
A
resulted in
B
resulted of
C
resulted from
D
led to
The plan once I objected to________ out fine.
#12530
A
working
B
work
C
had worked
D
worked