Quizzes: Verb Tense 2

Each sentence contains a bolded pair of verbs. Using the context of the sentence, select the option that presents the verb in the correct tense.
1) Following the completion of renovations to Carnegie Hall’s main auditorium in 1986, concert-goers (complained/have complained) that the famous acoustics of the concert hall had been diminished.

 
2) After she was confirmed as Under Secretary of Commerce for Oceans and Atmosphere in 2009, Jane Lubchenco (declared/had declared) her expectation that science would play a key role in the development of a green economy.

 
3) Alexander the Great, who created the largest empire in the ancient world, (would/will) eventually be considered one of the greatest military commanders of all time.

 
4) In 1917, the administration of Yellowstone National Park passed to the National Park Service, which (has been/had been) created by President Woodrow Wilson the previous year.

 
5) In 1917, the administration of Yellowstone National Park passed from the military to the National Park Service, which (was/had been) created by President Woodrow Wilson the previous year.
6) The Great Comet of 1577 passed so close to the Earth that the inhabitants of countries across Europe (observed/had observed) it with their bare eyes.

 
7) Johannes Kepler, who (played/has played) a key role in the seventeenth century scientific revolution, is best known for his laws of planetary motion, which were codified by later astronomers.

 
8) Labor unions, which originated in Europe, (became/had become) internationally popular by time the Industrial Revolution began in the early nineteenth century.

 
9) Preliminary plans for space travel to Mars were/have been undertaken since the 1950s, with projected voyages typically taking place ten to thirty years in the future.

 
10) By the time Húgo Chavez was elected President of Venezuela in 1998, he (already served/had already served) as a military officer for many years and risen to national prominence as the leader of the Fifth Republic Movement political party.