Correct Answer: D

Rationale: The word 'his' is the possessive form of the pronoun 'Mr. Menotti,' indicating that the belongings belong to him. Using 'her,' 'him,' or 'he' would not be grammatically correct in this context as they do not reflect the possession by Mr. Menotti. 'Her' would imply the belongings belong to his wife, 'him' is an objective pronoun, and 'he' is a subject pronoun, neither of which correctly shows possession.

Correct Answer: C

Rationale: The word 'boys'' should be spelled as 'boys' in this context. The correct possessive form of the plural noun 'boys' does not require an apostrophe before the final S, which indicates possession. In this sentence, the intent is to show that the pranks belong to the four boys collectively, so the correct possessive form is 'boys' without the additional apostrophe.

Correct Answer: B

Rationale: In the given sentence, the word 'once' is used incorrectly. The original sentence implies that the professor was an intern in the hospital at a specific time in the past, not just once. The word 'formerly' would imply that the professor used to be an intern but is no longer. Therefore, 'once' is the incorrect word choice in this context. The other options ('professor,' 'intern,' 'hospital') are all used correctly in the sentence.

Correct Answer: A

Rationale: The correct answer is 'and.' The sentence requires a conjunction that shows the need for both a thorough cleaning and washing the windows. The word 'and' is used to connect two actions that must be performed, indicating a list of tasks that should be completed in the lounge. Choices B, C, and D are incorrect because 'or' would imply a choice between cleaning and washing the windows, 'but' would suggest a contrast or contradiction between cleaning and washing the windows, and 'yet' is used to show a contrast or unexpected result, which is not suitable in this context where both actions are necessary.

Correct Answer: B

Rationale: The word 'infer' is used incorrectly in the sentence. 'Infer' means to deduce or conclude something based on evidence and reasoning, while in the sentence, the speaker is actually asking if the grimace suggests that the person hated the performance. The correct word that should be used in this context is 'imply' or 'suggest.' 'Grimace' (choice A), 'loathed' (choice C), and 'performance' (choice D) are all used appropriately in the sentence.