1. The CEO argued that implementing the proposed changes would not only streamline operations but also _____ employee morale, leading to increased productivity and innovation throughout the company.
Solution
Correct: C
The sentence requires parallelism between 'streamline operations' and the subsequent action affecting employee morale. 'Would not only streamline operations but also improve employee morale' maintains this parallelism and is grammatically correct. The infinitive 'improve' is needed after 'would'.
2. Despite the overwhelming evidence to the contrary, many people still stubbornly cling to the belief _____ the Earth is flat.
Solution
Correct: B
The correct answer is 'that'. The word 'belief' requires 'that' to introduce the subordinate clause explaining the content of the belief. Other options do not correctly introduce the clause.
3. Having meticulously analyzed the data, the research team concluded that the initial hypothesis, while conceptually appealing, was ultimately _____.
Solution
Correct: C
The phrase requires an adjective that describes the state of the hypothesis after the analysis. 'Unsupported' fits this meaning and is the grammatically correct choice. 'To be unsupported' is unnecessarily verbose and grammatically awkward in this context.
4. The company's new marketing campaign, aimed at millennials, proved to be far _____ successful than initially anticipated, exceeding all projections within the first quarter.
Solution
Correct: C
The phrase requires a comparative adjective to describe the success of the campaign compared to expectations. 'More' is the correct word to complete the comparative phrase 'more successful than'.
5. The politician's speech, while filled with lofty rhetoric, lacked concrete proposals _____ addressing the pressing issues facing the nation.
Solution
Correct: B
The correct preposition to use with 'proposals' when indicating their purpose is 'for'. 'Proposals for addressing' indicates what the proposals are intended to do.
6. The professor argued that the student's interpretation of the poem, while unconventional, was no less valid _____ other, more traditional readings.
Solution
Correct: B
The sentence requires the comparative word 'than' to compare the validity of the student's interpretation with other readings. 'No less valid than' is the correct comparative construction.
7. Despite its reputation for being fiercely independent, the small country relies heavily _____ foreign aid for its economic survival.
Solution
Correct: B
The correct preposition to use with 'relies' when indicating the source of support is 'on'. 'Relies heavily on' means the country depends on foreign aid.
8. The scientist's groundbreaking research challenged the long-held belief that the universe was static, instead suggesting that it was constantly _____.
Solution
Correct: B
The sentence requires a present participle to describe the ongoing state of the universe. 'Expanding' fits this meaning and maintains the parallel structure with 'was'.
9. The company's decision to outsource its manufacturing operations resulted not only in cost savings but _____ a significant reduction in product quality.
Solution
Correct: E
The sentence requires a correlative conjunction to pair 'not only' with its counterpart. 'But also' is the correct correlative conjunction to use in this context.
10. The success of the project hinged on the team's ability to effectively communicate and _____ their efforts towards a common goal.
Solution
Correct: C
The phrase 'to effectively communicate and coordinate' maintains parallel structure with 'to communicate'. Therefore, the bare infinitive 'coordinate' is the correct choice.
11. The new policy, which aims to reduce carbon emissions, is expected to have a significant impact _____ the environment.
Solution
Correct: B
The idiom is 'have an impact on'. So, the correct answer is 'on'.
12. Despite the complexity of the subject matter, the professor managed to explain the concepts _____ clarity and precision.
Solution
Correct: A
The correct idiom is 'with clarity and precision'. This indicates the manner in which the professor explained the concepts.
13. The scientist hypothesized that the new drug would be effective _____ treating a wide range of viral infections.
Solution
Correct: B
The correct preposition to use with 'effective' when indicating the purpose is 'in'. Thus, 'effective in treating' is the right choice.
14. The company's decision to merge with its competitor was driven primarily _____ the desire to gain a larger market share.
Solution
Correct: A
The correct preposition is 'by', indicating the cause or motivation for the decision. 'Driven by' is the correct phrasal verb in this context.
15. Having failed to secure the necessary funding, the research project was ultimately _____ indefinitely.
Solution
Correct: C
The sentence requires a past participle to complete the passive voice construction 'was ultimately postponed'. 'Postponed' correctly indicates that the project's continuation was delayed.
16. The consultant advised the company to focus on developing innovative products _____ to improve its overall competitiveness.
Solution
Correct: B
The correct answer is 'in order'. It's best suited to express purpose and creates logical flow: focus on development to improve competitiveness.
17. His argument, though elegantly presented, rested on a flawed premise, _____ rendering his conclusion invalid.
Solution
Correct: A
The best fit is 'thereby' which means 'as a result of that'. Other options don't clearly indicate the direct consequence of the flawed premise.
18. The committee members were sharply divided _____ the proposed changes, with some supporting them and others vehemently opposing them.
Solution
Correct: C
The correct preposition is 'on'. You are 'divided on an issue' not 'divided between' (used for two things) or 'divided among' (used for several distinct groups).
19. The novel's protagonist, a complex and enigmatic figure, remains an _____ to readers long after they have finished the book.
Solution
Correct: A
The sentence requires a noun. 'Enigma' means a person or thing that is mysterious, puzzling, or difficult to understand. The other options are incorrect forms of the word.
20. The company's stock price plummeted following the announcement of disappointing earnings, _____ investors' confidence in its future prospects.
Solution
Correct: A
The sentence requires a present participle to describe the effect of the announcement. 'Eroding' correctly describes the ongoing process of damaging investors' confidence. It's a continuous effect following the announcement, hence a gerund is needed.
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