Comparative Adverbs

Animals should be treated ​ (a)   than they are in some sports.

• more kindly
• quicklier

Horses run ​ (a)   in the wild than they do in a small racetrack.

• faster
• more fastly

Some people argue that animals should be trained ​ (a)   to avoid injuries in sports.

• more carefully
• naturalier

Dogs used for racing often get tired ​ (a)   than their trainers expect.

• more quickly
• carefullier

Wild animals behave ​ (a)   in their own environment than in sports arenas.

• more naturally
• more proper

Some trainers treat their animals ​ (a)   than others, but all animals deserve respect.

• more gently
• gentlier

If animals are used in sports, they should be cared for ​ (a)   than they usually are.

• more properly
• seriouser

Many animals live ​ (a)   in the wild than in sports competitions.

• longer
• deeplier

Some trainers push their animals ​ (a)   than necessary, which can cause them harm.

• harder
• obedientlier

Animals feel pain ​ (a)   than some people realize when they are forced to compete.

• more deeply
• hardliest