Correcting Verb Tense Errors Practice Test

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

Before he signed up for the arctic expedition in July, Robert had been researching cold-weather survival techniques and deciding that he might have a chance.

Replace the underlined portion with the answer choice that results in a sentence that is clear, precise, and meets the requirements of standard written English.

Over the past few years, breakthroughs in navigational technology almost completely rendered paper maps obsolete.