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 phrase in the following sentence that is not used correctly. Before their hospitalization, the children had rarely eaten three meals a day.

Correct answer: C

Rationale: The phrase 'had rarely' is not used correctly in the sentence. The correct form should be 'rarely eaten' instead of 'had rarely' to convey the past tense of the children's eating habits before their hospitalization. 'Had rarely' is incorrect because it does not match the structure needed to describe the children's eating habits in the past. Choices A, B, and D are grammatically sound and fit appropriately in the sentence.

3. What word is used incorrectly in the following sentence: 'Brendan spent the day laying a brick foundation on the site.'

Correct answer: D

Rationale: The word 'laying' is used incorrectly in the sentence. The correct word should be 'laying' when referring to the action of setting up a brick foundation. Therefore, the correct choice is 'D: laying.' In this context, 'lying' would imply being in a horizontal position, which is not the intended meaning. Choices A, B, and C are not incorrect in the sentence and do not affect the clarity or correctness of the statement.

4. Which word is not spelled correctly? The government official was grateful to receive that award.

Correct answer: A

Rationale: The correct spelling of the word is 'government' with an 'n' after the 't.' In the sentence provided, the word 'goverment' is misspelled, making it the correct answer choice. Choices B, C, and D are all spelled correctly within the context of the sentence, so they are not the correct answer.

5. Select the word that makes this sentence grammatically correct: 'While he was an apprentice, Steve ____ a great deal of time in the studio.'

Correct answer: B

Rationale: 'Spent' is the correct past tense of 'spend.' In this sentence, the action of spending time in the studio already happened while Steve was an apprentice, requiring the past tense 'spent.' 'Spends' is present tense, 'spended' is not a valid word, and 'spend' is present tense without matching the past context of the sentence.

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