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 is not spelled correctly in the context of the following sentence? The counselor expected me to accept her advice without question.

Correct answer: A

Rationale: The word 'counselor' is spelled correctly in the sentence. The word 'advise' in the sentence should be spelled 'advice.' 'Advise' is a verb meaning to offer suggestions, while 'advice' is a noun referring to recommendations or guidance given by someone. In this context, the correct word to use is 'advice,' as the sentence implies the counselor's guidance rather than her action of advising. Choice A is the correct answer as it is the only word that is not spelled correctly in the given sentence.

3. Which word is not spelled correctly in the context of the following sentence? Nothing can be more delightful than a late-night swim in the reservoir.

Correct answer: C

Rationale: In the context of the sentence, the word 'then' is used incorrectly. The correct word that should be used is 'than,' which is used to make comparisons. The sentence should read, 'Nothing can be more delightful than a late-night swim in the reservoir.' The other choices 'Nothing,' 'delightful,' and 'reservoir' are spelled correctly and are contextually appropriate in the sentence.

4. Which word is used incorrectly in the following sentence? The design was incredibly complex, with multicolored, repeating patterns.

Correct answer: A

Rationale: The word 'incredible' is used incorrectly in the sentence. The correct form in this context should be 'incredibly' to modify the adjective 'complex.' Therefore, the corrected sentence is, 'The design was incredibly complex, with multicolored, repeating patterns.' The other choices (B, C, D) are used appropriately in the sentence and do not need any corrections.

5. What punctuation is needed in the following sentence to make it correct? Do not be afraid to ask questions in his class, he is very approachable and explains things well.

Correct answer: B

Rationale: The correct punctuation needed in the given sentence is a comma after 'class.' This comma is necessary to separate the two independent clauses 'Do not be afraid to ask questions in his class' and 'he is very approachable and explains things well.' Commas are used to separate independent clauses when they are joined by a coordinating conjunction like 'and.' Choice A, 'Hyphen,' is incorrect as a hyphen is not needed to connect any words in the sentence. Choice C, 'Apostrophe,' is incorrect as there is no possession or contraction being indicated in the sentence that requires an apostrophe. Choice D, 'Semicolon,' is incorrect as a semicolon is not used to join two independent clauses in this context; a comma followed by a coordinating conjunction is more appropriate.

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