Subject-verb agreement

Front

Billy, despite his great timing for stand-up comedy, was hindered by his poor memory.

Back

was

Front

Restaurant food is nutritionally no better than fast food due to rich ingredients like butter and salt.

Back

rarely skimp

Front

Middle school students in Gateway, Alaska observe intubation and sets bones.

Back

set

Front

Some consider it foolish to build a hot-air balloon to travel the world; others call it a brilliant way to avoid rising air travel rates.

Back

no change

Front

Margaret can spend a week in the wilderness; she surely possesses the fortitude to deal with a spider in her bathtub.

Back

no change

Front

Hiking Machu Picchu, altitude sickness is a bigger challenge than the climb intensity.

Back

find

Front

Calzones often contain the same ingredients as pizza but are easier to hold and present a more subdued package.

Back

no change

Front

Hungry mosquitoes first focus on smell, then warmth; body odor may increase desirability.

Back

first zero

Front

Columbus's journey to the Americas had calm seas, despite claims of harsh weather.

Back

no change

Front

In 1906, President Theodore Roosevelt revised 300 words he deemed too complex, simplifying American spellings from British ones.

Back

were