SAT & ACT Comma Question Drill Set 1

These exercises focus on helping you master the comma rule for non-essential phrases, the most frequently tested comma rule on ACT English and SAT Writing.

Below the drills are explanations for every correct and incorrect answer.

Select the answer choice that corrects the portion of the sentence in bold italics. If the portion of the sentence in bold italics is already correct, choose NO CHANGE.

Drill 1

"In the spring of 1869, a group of explorers embarked on a journey to chart the Colorado River. By the end of the year, they had encountered numerous hardships. In the years following the expedition, nevertheless, their work was recognized as a significant contribution to the geographic knowledge of the region."