Correct Answer: D

Rationale: The term 'insidious' typically describes something that occurs gradually and subtly, often without being noticed until it has become more serious or established. Therefore, the development of the disease being insidious suggests that it was gradual, aligning best with the meaning of the word in this context. Choice A, 'momentous,' means significant or important, which is opposite in meaning to insidious. Choice B, 'sudden,' indicates something happening quickly and unexpectedly, contrary to the gradual nature of an insidious development. Choice C, 'innocuous,' means harmless or not likely to cause harm, which does not accurately reflect the negative and harmful connotation associated with an insidious disease development.

Correct Answer: A

Rationale: The correct answer is A: 'He is a legal resident of the United States.' In this sentence, 'legal' is used to describe the type of resident he is, making it an adjective. The other choices use 'legal' as part of a noun phrase or an adverbial phrase, not as an adjective. Choice B uses 'legal' to describe the type of action, making it a noun adjunct. Choice C uses 'legal' to describe the legality of the action, making it part of an adjectival phrase. Choice D uses 'legal' to describe the manner in which he acted, making it an adverb.

Correct Answer: D

Rationale: The term 'insidious' typically describes something that occurs gradually and subtly, often without being noticed until it has become more serious or established. Therefore, the development of the disease being insidious suggests that it was gradual, aligning best with the meaning of the word in this context. Choice A, 'momentous,' means significant or important, which is opposite in meaning to insidious. Choice B, 'sudden,' indicates something happening quickly and unexpectedly, contrary to the gradual nature of an insidious development. Choice C, 'innocuous,' means harmless or not likely to cause harm, which does not accurately reflect the negative and harmful connotation associated with an insidious disease development.

Correct Answer: B

Rationale: The correct answer is B: 'Likely to occur soon.' 'Impending' is used to describe something that is about to happen or is looming in the near future. Choices A, C, and D are incorrect because 'Impending' does not indicate that something is unlikely, certain to never occur, or likely to never occur.

Correct Answer: B

Rationale: The correct answer is B: 'Complaining.' Querulous is an adjective that describes someone who is constantly complaining or irritable. It is not related to shouting (Choice A) or crying (Choice C). Choice D, 'Praising,' is the opposite of the meaning of querulous and therefore incorrect.