1.   Dana Bryan, park management specialist with the state Department of Environmental Protection, said pigs must be removed to keep them in check at state parks.

2.   Remove to keep warm.

3.   In addition, loose objects such as electric generators were removed to keep them from becoming projectiles.

4.   In addition, loose objects such as electric generators were being removed to keep them from becoming projectiles.

v. + keep >>共 530
fight 13.88%
work 7.64%
do 6.39%
use 6.13%
can 4.63%
battle 1.61%
opt 1.46%
win 1.35%
lobby 1.30%
be 1.04%
remove 0.21%
remove + v. >>共 110
make 6.83%
allow 4.39%
follow 4.39%
create 3.90%
reveal 3.90%
prevent 3.41%
be 2.93%
use 2.93%
wire 2.44%
accommodate 1.95%
keep 1.95%
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