select the word that makes the following sentence grammatically correct the centrifuge cannot run by it requires constant attention
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HESI A2

Grammar for HESI A2

1. Select the word that makes the following sentence grammatically correct: The centrifuge cannot run by ___________; it requires constant attention.

Correct answer: B

Rationale: The correct answer is 'itself.' The sentence is referring to the centrifuge, which is an object, not a person. Therefore, the word 'itself' is used to indicate that the centrifuge cannot run on its own; it requires constant attention. Choices A, C, and D are incorrect because they refer to a person or people, which is not suitable in the context of the sentence.

2. Select the word that makes the following sentence grammatically correct. The intern had to select _________ three specialties.

Correct answer: A

Rationale: The correct answer is A, 'among'. When choosing from more than two items, the preposition 'among' is used. In this case, 'among' is the appropriate choice as the intern had to select from three specialties, indicating a selection from a group rather than a choice between two specific options. Choice B, 'between', is incorrect because it is used when choosing between two items. Choice C, 'with', and choice D, 'along', are also incorrect as they do not convey the idea of choosing from a group of items.

3. Select the word that makes the following sentence grammatically correct. The hockey team ___________ traveling to Albany for the semifinals.

Correct answer: A

Rationale: The subject of the sentence 'The hockey team' is singular, so the correct verb to use is 'is' to maintain subject-verb agreement. In this case, 'is' agrees with the singular subject 'team,' making the sentence grammatically correct. Choices B, C, and D are incorrect as they do not agree with the singular subject 'team.' 'Are' is plural, 'be' is not the correct form of the verb to use in this context, and 'were' is past tense which is not suitable for the present tense sentence.

4. Which word is not used correctly in the context of the following sentence? Does your grimace infer that you loathed the performance?

Correct answer: B

Rationale: The word 'infer' is used incorrectly in the sentence. 'Infer' means to deduce or conclude something based on evidence and reasoning, while in the sentence, the speaker is actually asking if the grimace suggests that the person hated the performance. The correct word that should be used in this context is 'imply' or 'suggest.' 'Grimace' (choice A), 'loathed' (choice C), and 'performance' (choice D) are all used appropriately in the sentence.

5. Select the phrase that will make the following sentence grammatically correct. Three days from now, the horses ___________.

Correct answer: C

Rationale: In this sentence, 'Three days from now' indicates a future timeframe, so the correct verb tense to use is the future tense. The phrase 'will perform in a show' is the best choice to make the sentence grammatically correct because it aligns with the future action of the horses. Choice A ('performing in a show') uses the present participle and is incorrect in this context. Choice B ('performed in a show') uses the past tense, which is not suitable for a future event. Choice D ('have performed in a show') uses the present perfect tense, which is also not appropriate for a future action. Therefore, the correct answer is C.

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