31.   The contract, which is for one year with an option to renew for the next eight, has a ceiling of five billion dollars.

v. + ceiling >>共 214
raise 8.62%
hit 4.61%
have 4.61%
set 4.31%
reach 2.82%
paint 2.82%
lower 2.67%
impose 2.67%
insulate 2.23%
put 2.23%
have + n. >>共 1145
chance 2.31%
problem 2.14%
trouble 1.82%
right 1.67%
plan 1.46%
idea 1.28%
lot 1.20%
time 1.09%
child 1.04%
power 1.04%
ceiling 0%
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