Thoroughly, the vet ___ our horses and pronounced them fit to race.
A. checked up on
B. check up
C. check in
D. check on
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People who cannot ____ colors are said to be color-blind.
A. separate with
B. distinguish between
C. splat from
D. distinguish from
Even though there are strict rules___the use of chemicals in food, some food producers disregard them intentionally in order to gain more profits.
A. restricting
B. prohibiting
C. keep
D. regulating
The President failed in his attempts to win the second term because he hadn't fulfilled his ____made in the previous election.
A. promise
B. commitments
C. oaths
D. words
It is very___of you to bring your umbrella to Kunming at this time of the year——it rains so frequently here.
A. sensitive
B. sensational
C. sensible
D. sensual