Correct Answer: B

Rationale: The word 'growing' in the sentence 'He felt a growing sense of unease' is functioning as an adjective. It describes the sense of unease, indicating a characteristic of the sense rather than an action (verb), a person, place, thing, or idea (noun), or modifying a verb, an adjective, or another adverb (adverb). Therefore, 'growing' is an adjective in this context.

Correct Answer: B

Rationale: The correct answer is 'B: Through the park.' A participial phrase acts as an adjective and is formed from a verb. In this sentence, 'Running through the park' describes 'she' and functions as an adjective modifying the subject. Choice A 'Running' is incorrect because it is just the present participle without additional context to form a phrase. Choice C 'She spotted' is incorrect as it is a subject and a verb, not a participial phrase. Choice D 'A squirrel' is incorrect as it is a noun phrase, not a participial phrase.

Correct Answer: B

Rationale: The correct answer is B, 'that I wouldn't live life to the fullest.' This clause functions as the object of the verb 'is,' making it a noun clause. Noun clauses act as nouns within a sentence, often functioning as subjects, objects, or complements. Choice A ('My biggest fear') is a noun phrase, not a clause. Choice C ('life') and Choice D ('the fullest') are singular nouns and not clauses.

Correct Answer: B

Rationale: The modal verb 'should' is used to imply an intention or expectation in the present or near future. Option B, 'I should be going now,' correctly conveys such a meaning, indicating the speaker's intention to leave at the current moment. Choices A, C, and D refer to past actions or future arrivals, which do not align with the appropriate usage of 'should' in this context. Therefore, option B is the only sentence that uses the modal verb 'should' correctly.

Correct Answer: B

Rationale: The word 'ambiguous' implies having multiple interpretations or uncertainty, which aligns closely with 'vague,' the correct answer. 'Vague' denotes a lack of clarity or definiteness, making it the most appropriate synonym in this context. 'Precise' (Choice A) is the opposite of ambiguous, indicating exactness and clarity, so it is not the best choice. 'Definite' (Choice C) also contrasts with ambiguous as it suggests clear and certain meaning. 'Straightforward' (Choice D) implies directness and simplicity, which does not capture the essence of ambiguity.