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: A

Rationale: The correct answer is A, 'among'. When choosing from more than two items, the preposition 'among' is used. In this case, 'among' is the appropriate choice as the intern had to select from three specialties, indicating a selection from a group rather than a choice between two specific options.
Choice B, 'between', is incorrect because it is used when choosing between two items.
Choice C, 'with', and choice D, 'along', are also incorrect as they do not convey the idea of choosing from a group of items.

Correct Answer: C

Rationale: The word 'datum' is singular, and the correct plural form of 'datum' is 'data.'
Therefore, the sentence should use 'data' instead of 'datum' to be grammatically correct. In the sentence provided, 'datum' should be replaced with 'data' to maintain proper grammar and syntax.

Choices A, B, and D are used correctly in the sentence, so they are not the correct answer.

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: B

Rationale: The subject 'The nursing staff' is a collective noun that is considered singular.
Therefore, the correct verb form to use is 'hopes.' The verb 'hopes' agrees with the singular subject, making the sentence grammatically correct.
Choice A ('hope') is incorrect because it is not the correct verb form for a singular subject.
Choice C ('hoping') is incorrect as it is a gerund and does not function as the verb in this sentence.
Choice D ('does hope') is incorrect as it introduces unnecessary emphasis and does not match the subject-verb agreement required in the sentence.