SAT Practice9b5de448-a962-4066-9d0a-de9dedcb59dd
Practice one SAT question at a time
Questions come from the Bluebook question bank.
Many mechanical calculators were powered by a notched cylinder mechanism called the Leibniz wheel. Leibniz wheel calculators were popular in the first half of the twentieth ______blank these ingenious devices were eventually replaced by electronic calculators.
Which choice completes the text so that it conforms to the conventions of Standard English?