Correct Answer: B

Rationale: The correct answer is 'B - resting' because it is the present participle form of the verb 'rest' and fits appropriately in the sentence structure 'After resting for an entire afternoon, the resident felt revitalized.' The present participle is used to show an ongoing action that happened before the feeling of revitalization. Choice A 'having rest' is incorrect as it does not convey the continuous action needed in this context. Choice C 'rested' is incorrect as it is the past tense form and does not match the tense of the sentence. Choice D 'rest' is incorrect as it is the base form of the verb and does not provide the needed -ing form for the sentence.

Correct Answer: B

Rationale: The word 'whom' should be used instead of 'who' in the sentence to make it grammatically correct. 'Who' is used as the subject of a sentence, while 'whom' is used as the object. Therefore, the correct form of the sentence should be: 'For whom was that email intended?' Choices A, C, and D are used correctly in the sentence and do not need any changes.

Correct Answer: B

Rationale: The correct answer is 'to roll.' In this sentence, 'started' is followed by the infinitive form of the verb 'to roll.' The construction 'started to roll' indicates the beginning of the action of the wheelchair moving down the corridor. Choice A ('roll') is incorrect as it lacks the infinitive marker 'to' needed after 'started.' Choice C ('rolled') is incorrect as it is the past tense form of the verb, not suitable for the sentence's context. Choice D ('will roll') is incorrect as it indicates a future action, not the past action indicated by 'started.'

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.

Correct Answer: B

Rationale: Option B, 'When I was seven, my mother moved me to a new school,' is the clearest sentence as it directly and clearly states that when the speaker was seven, their mother moved them to a new school. This sentence clearly indicates the age of the speaker and who initiated the action, making it the most precise and easy to understand among the choices. Choices A, C, and D are incorrect because they either incorrectly position the age or the action initiator, leading to ambiguity and confusion in the sentence.