Free ACT Usage practice questionsEnhanced ACT, 2026 format
Subject–verb agreement, pronoun agreement and case, verb tense, and commonly confused words, all inside an underlined portion of an essay.
Answer each question, then read why the right answer is right and why the tempting one is wrong.
Question 1
English
When the expedition reached the plateau in 1911, the surveyors unpack their theodolites and began mapping the escarpment. Their measurements remained the region's most reliable for half a century.
Which choice makes the sentence most grammatically acceptable?
Question 2
English
[4] Audiologists have greeted the change with mixed feelings, some of them warning that consumers will misjudge the severity of their own loss. The concern is not frivolous, untreated hearing loss is associated with social isolation and with faster cognitive decline in older adults. But the alternative to an imperfect over-the-counter device, for many people, has never been a professionally fitted one. It has been nothing.
Which choice makes the sentence most grammatically acceptable?
Question 3
English
[4] Ruth Delacroix and her brother Paul, have run the Snoqualmie course for nineteen years. Paul carries the tube being that he is taller and can drive it through a nine-foot pack without a step stool. Ruth keeps the notebook, in which every reading since 1938 are recorded in the same three columns.
Which choice makes the sentence most grammatically acceptable?
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