Correct Answer: B

Rationale: The verb 'raised' should be used in the past tense to match the past event (lecture was over). Therefore, the correct phrase is 'raised their hands to ask questions.' In English, when referring to a past event, the past tense of the verb is typically used to maintain proper grammar and clarity. Choice A is incorrect because it uses the present tense 'raise' instead of the past tense. Choice C is incorrect as it uses the present perfect tense 'have raised,' which is not suitable for a simple past event. Choice D is incorrect as it uses the present continuous tense 'are raising,' which is not appropriate for a completed past action.

Correct Answer: A

Rationale: The word 'counselor' is spelled correctly in the sentence. The word 'advise' in the sentence should be spelled 'advice.' 'Advise' is a verb meaning to offer suggestions, while 'advice' is a noun referring to recommendations or guidance given by someone. In this context, the correct word to use is 'advice,' as the sentence implies the counselor's guidance rather than her action of advising. Choice A is the correct answer as it is the only word that is not spelled correctly in the given sentence.

Correct Answer: A

Rationale: The word 'oneself' is a reflexive pronoun that refers back to the subject of the sentence, allowing the sentence to be grammatically correct. Options B and C, 'oneselves' and 'hisself,' are not standard English words. Option D, 'themselves,' is a plural pronoun and does not agree with the singular noun 'one' in the sentence.

Correct Answer: B

Rationale: A comma is needed to separate the items being listed (notebook and small handmade coffee mug) in the sentence. This punctuation mark helps to clearly indicate the individual components being mentioned in a list. In this case, a comma is used in a series (also known as a list) to separate the items listed, ensuring clarity and proper punctuation structure. The other choices are incorrect because a period would create two separate sentences, a colon is used to introduce a list or an explanation (neither of which is the case here), and a hyphen is used to join words or parts of words.

Correct Answer: D

Rationale: The word 'their' is the best substitute for the underlined words in the sentence because it refers to Stu's roommates in a possessive form, indicating that the housekeeping belongs to them. 'His' (Choice A) refers to Stu, not the roommates. 'Hers' (Choice B) is incorrect as it refers to a female possessive form. 'Them' (Choice C) is a pronoun for a group of people but does not show possession, making it unsuitable in this context.