Correct Answer: B

Rationale: The word 'whose' in the sentence should be 'whose.' 'Whose' is the correct possessive form used to indicate that the diploma belongs to the doctor. 'Who's' is a contraction for 'who is' or 'who has,' which does not make sense in this context. The other words in the sentence - 'That,' 'hung,' and 'partition' are all used correctly in the sentence.

Correct Answer: C

Rationale: The word 'our' is the best substitute for the underlined words 'the doctor's and my' in the sentence. Using 'our' indicates joint possession, making the sentence more concise and natural. Choice A, 'his', is singular possessive and does not reflect the joint ownership implied by the sentence. Choice B, 'their', is plural possessive and does not align with the singular subjects 'the doctor and I'. Choice D, 'mine', is possessive for the first person singular pronoun and does not convey the shared ownership of the notes by both individuals.

Correct Answer: C

Rationale: In this sentence, we are looking for a pronoun that refers to more than one person. The children and 'them' performed a skit for the elderly patients. 'Them' is the correct pronoun to use in this context to indicate a group of people, which is the plural form of the pronoun. Choice A, 'he,' is singular and would not match the plural subject. Choice B, 'me,' is an object pronoun and does not fit the subject position. Choice D, 'her,' is singular and does not agree with the plural subject 'children and them.' Therefore, the correct answer is 'C: them.'

Correct Answer: C

Rationale: The word 'boys'' should be spelled as 'boys' in this context. The correct possessive form of the plural noun 'boys' does not require an apostrophe before the final S, which indicates possession. In this sentence, the intent is to show that the pranks belong to the four boys collectively, so the correct possessive form is 'boys' without the additional apostrophe.

Correct Answer: C

Rationale: The correct answer is 'C: herself.' In this sentence, 'herself' is the reflexive pronoun that correctly refers back to Mary Ann. It shows that Mary Ann is giving credit to herself for studying hard and passing the test. The use of 'oneself' (choice A) would be incorrect here as it is too general and does not specify Mary Ann. Choices B and D ('itself' and 'themselves') are also incorrect because they do not match the singular subject 'Mary Ann.' Therefore, 'herself' is the only option that fits both grammatically and contextually in this sentence.