HESI A2 Grammar Practice Exam

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: A

Rationale: The correct answer is A: stealthy. In the sentence, "stealthily" should be used instead of "stealthily" to modify the verb "moving." Stealthily is an adverb that describes the action of moving in a sneaky or secretive manner. The adverb form is needed to modify the verb “moving” in this sentence. The other choices (B: sneaky, C: reached, D: topmost) are all used correctly in the sentence. "Sneaky" appropriately describes the boy's behavior, "reached" is the correct past tense of the verb "reach," and "topmost" correctly indicates the position of the shelf.

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.

Correct Answer: D

Rationale: The correct answer is D, "in the auditorium." This phrase is misplaced because it should come immediately after "presentation" for clarity. The sentence should read, "At a presentation in the auditorium, he informed us about the dangers of drugs and alcohol." The other choices are not misplaced as they are all positioned correctly in the sentence and contribute to the overall meaning.

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.