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. Which word in the following sentence functions as the direct object: 'The nurse helped the patient with the medication'?

Correct answer: C

Rationale: In the sentence 'The nurse helped the patient with the medication,' the direct object is 'patient' because it receives the action of being helped. The direct object typically answers the question 'whom' or 'what' after the verb. In this case, 'the patient' is the one being helped by the nurse, making it the direct object. Choices A, B, and D are incorrect. 'Helped' is the verb, 'nurse' is the subject performing the action, and 'medication' is part of a prepositional phrase and does not directly receive the action of the verb.

3. Select the word that will make the following sentence grammatically correct. The patients are resting comfortably; ___________, bed checks should still be done every half hour.

Correct answer: C

Rationale: The word 'otherwise' is used to indicate that although the patients are resting comfortably, under different circumstances, bed checks should still be done every half hour. This maintains the correct logic and flow of the sentence, making it grammatically correct. Choice A, 'despite,' would imply a contrasting situation that is not the intended meaning in this context. Choice B, 'however,' also implies a contrast rather than the intended conditional relationship. Choice D, 'afterward,' indicates a time sequence that does not fit the context of the sentence.

4. What word is best to substitute for the underlined word in the following sentence? Roseanne was sent to the lab to collect Roseanne’s results.

Correct answer: C

Rationale: The correct option to substitute for 'Roseanne’s' is 'her' to maintain correct pronoun-antecedent agreement. In this case, using 'her' makes the sentence grammatically correct and clear by referring back to Roseanne in a proper manner. Choice A, 'she,' is a subject pronoun and does not match the possessive form needed in the sentence. Choice B, 'their,' is plural and does not agree with the singular possessive 'Roseanne’s.' Choice D, 'hers,' is a possessive pronoun but cannot directly replace 'Roseanne’s' in this context; 'her' is the appropriate choice to indicate possession.

5. Which word is used incorrectly in the following sentence? Follow the instructions you received in your packet.

Correct answer: C

Rationale: The word 'your' is used incorrectly in the sentence. The word 'your' is the possessive form that shows ownership, while 'you're' is a contraction of 'you are.' In this context, 'your' should be used to indicate that the packet belongs to the person. The correct sentence should be 'Follow the instructions you received in your packet.' The other choices ('Follow,' 'instructions,' and 'packet') are all used appropriately in the sentence and do not need any corrections.

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