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. If you are __________ uncomfortable, I will bring you another pillow.

Correct answer: B

Rationale: The correct word to make the sentence grammatically correct is 'too.' In this context, 'too' means excessively or to a higher degree, indicating that the person is extremely uncomfortable and needs another pillow. 'To' is a preposition and does not fit the context of the sentence. 'Much' is an adverb used to refer to a large quantity, not the degree of discomfort. 'Lesser' is a comparative adjective, which is not suitable for expressing the level of discomfort in this sentence. Therefore, 'too' is the most appropriate choice to convey the intended meaning.

3. 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.

4. Select the word or phrase that makes the following sentence grammatically correct. If Angela attends the seminar tomorrow, she ___________ the employee discount.

Correct answer: D

Rationale: The correct answer is 'D: will be given.' In the sentence, the future passive voice is needed to convey that Angela will receive the employee discount if she attends the seminar. 'Will be given' is the appropriate phrase to express this passive construction. Choices A, B, and C are incorrect as they do not form the correct future passive structure required in the sentence.

5. Select the phrase or clause that is misplaced in the following sentence: I noticed a number of workers from my car window who were repairing the road alongside the mall.

Correct answer: A

Rationale: The phrase 'of workers' is misplaced in the sentence because the preposition 'of' is unnecessary and disrupts the flow of the sentence. It creates redundancy as 'a number of workers' can be simplified to 'workers.' Removing this unnecessary prepositional phrase would make the sentence clearer and more concise. Choice B 'from my car window' is correctly placed as it provides context on where the observation was made. Choice C 'who were repairing the road' and Choice D 'alongside the mall' are essential parts of the sentence providing details about the workers' activity and location, respectively.

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