Two students _________ their professor about the possibility of obtaining a good grade in class.

Correct Answer: A

Rationale: The correct answer is 'Ask' because it maintains subject-verb agreement with 'two students,' requiring a plural verb 'ask' to match the plural subject. The other choices ('Is,' 'Was,' 'Could') do not agree with the plural subject and are thus incorrect. 'Is' is singular, 'Was' is the past tense form, and 'Could' indicates a possibility but does not fit the context of the sentence.

Correct Answer: C

Rationale: In this sentence, the correct reflexive pronoun is 'myself' as it reflects the action back onto the subject. 'I want to do it myself' means the child wants to do something on their own without assistance from others. Choice A 'Mine' is a possessive pronoun and doesn't fit in the context of the sentence. Choice B 'Me' is an object pronoun and doesn't show the action reflecting back on the subject. Choice D 'Me self' is not a correct form of a reflexive pronoun in English.

Correct Answer: C

Rationale: The correct answer is 'C: Had known.' In this sentence, the structure is a third conditional, which is used for unreal situations in the past. 'Had known' is the correct past perfect form that matches the conditional structure. It indicates that if they had possessed the knowledge about the bad weather in advance, they wouldn't have gone to the beach. Options A, B, and D do not correctly fit the past perfect tense required in this context. 'Know' (Option A) is present tense, 'Knew' (Option B) is simple past tense, and 'Were knowing' (Option D) is incorrect and does not convey the intended meaning of the sentence in the context of a third conditional.

Correct Answer: A

Rationale: The correct answer is 'Ask' because it maintains subject-verb agreement with 'two students,' requiring a plural verb 'ask' to match the plural subject. The other choices ('Is,' 'Was,' 'Could') do not agree with the plural subject and are thus incorrect. 'Is' is singular, 'Was' is the past tense form, and 'Could' indicates a possibility but does not fit the context of the sentence.

Correct Answer: A

Rationale: The correct answer is 'Massive' as it accurately describes the size of the stage in relation to the performance. The word choice 'Massive' complements the context of a theater performance, highlighting the grandeur and scale of the stage. The other choices, 'Stunningly,' 'Lonely,' and 'Misery,' do not fit logically in the sentence as they do not relate to the physical attributes of the stage.

Correct Answer: B

Rationale: In this sentence, 'Economics' is a singular subject, so it should be paired with a singular verb. 'Is' is the correct verb to use with a singular subject like 'Economics.' Therefore, the correct sentence is: 'Economics is my least favorite subject at school.' Choice A 'Am' is incorrect because it is a first-person singular form of the verb 'to be' and does not agree with the subject 'Economics.' Choice C 'Are' is incorrect as it is a plural verb form and does not match the singular subject 'Economics.' Choice D 'Been' is incorrect as it is a past participle and cannot be used as the main verb in this sentence structure.

Correct Answer: A

Rationale: The correct answer is A: 'As soon as the puppies were asleep' is the dependent clause in the sentence. It functions as an adverbial clause, indicating a time relationship with the action of the mother dog leaving her bed. Dependent clauses rely on independent clauses to form complete sentences and cannot stand alone. Choice B is incorrect because it separates the dependent clause. Choice C is incorrect as it is a noun phrase. Choice D is incorrect as it is an independent clause.

Correct Answer: B

Rationale: In this sentence, the word that best fits is 'warranted,' meaning that the symptoms did not justify or necessitate an emergency room visit. 'Desired' means wanted or wished for, 'Guaranteed' means assured, and 'Should have been' is not the appropriate phrase in this context. Therefore, 'warranted' is the correct choice for this question.

Correct Answer: A

Rationale: The correct sentence is 'Which one do you want?' Choice A is grammatically correct as it forms a question using 'which' to inquire about a specific choice. Choices B, C, and D contain errors in phrasing or grammar. Choice B includes a misspelling of 'want,' choice C uses 'whose' incorrectly, and choice D incorrectly combines 'who' and 'is' without proper context.