HESI A2 Grammar Practice Exam

Correct Answer: B

Rationale: The correct punctuation needed in the sentence is a comma (Choice B). The comma is used to separate the dependent clause "Because of a major accident on the freeway" from the independent clause "the emergency room was overcrowded." This creates a clear and correct sentence structure. A period (Choice A) would create two separate sentences, which is not necessary in this case. An exclamation point (Choice C) is inappropriate as the sentence is not expressing excitement or strong emotion. A semicolon (Choice D) is not suitable as the clauses are not closely related or part of a list.

Correct Answer: B

Rationale: The correct answer is B: once. In the sentence, "once" is used incorrectly as it implies the professor was only an intern for a brief period in the past, which may not be true. The sentence suggests the professor was an intern at the hospital in the 1980s, not just for a single instance. The other choices (A, C, D) are used correctly in the context of the sentence, as they refer to the profession, role, and location respectively without any ambiguity or error.

Correct Answer: B

Rationale: The correct answer is B: has. In this sentence, "One of the students" is a singular subject, so the correct verb form should be singular as well. "Has" is the correct singular form of the verb to agree with the singular subject. Choice A (have) is incorrect as it is a plural form. Choice C (are) is incorrect as it is also a plural form. Choice D (is) is incorrect as it is not the correct verb form to match the subject "students."

Correct Answer: B

Rationale: The correct answer is B: infer. In the sentence, "infer" is used incorrectly. The word "infer" means to deduce or conclude information based on evidence or reasoning, while in the sentence, it should be "imply" as it is the speaker who is suggesting something through the grimace. The other choices (A, C, D) are used correctly in the context of the sentence. A grimace is a facial expression of disgust or pain, "loathed" means strongly disliked, and "performance" refers to a presentation or show.

Correct Answer: D

Rationale: The correct answer is D, "their." In the sentence, "their" is used incorrectly because it is a possessive pronoun, but it doesn't have a noun to show possession. The sentence should be "The boys leapt up, happy to assist their favorite teacher." The other choices (A, B, C) are used correctly in the sentence and are essential to convey the intended meaning. Choice A, "leapt," is a past tense verb that correctly describes the action of the boys jumping up. Choice B, "happy," is an adjective that correctly describes the boys' emotional state. Choice C, "assist," is a verb that correctly describes the action the boys are willing to take.