Correct Answer: A

Rationale: The correct answer is 'Play' because 'Children' is a plural subject and requires the base form of the verb. When referring to a plural subject like 'Children,' the verb should be in its base form without an added 's' or 'ed.' In this context, 'Play' is the appropriate form to use to match the subject 'Children.' Choice B, 'Plays,' is incorrect because it is the singular form of the verb and does not agree with the plural subject 'Children.' Choice C, 'Played,' is incorrect as it is the past tense form of the verb and does not fit the present tense context of the sentence. Choice D, 'Playing,' is incorrect as it is the present participle form of the verb and does not match the simple present tense needed in the sentence.

Correct Answer: A

Rationale: In this sentence, 'Oneself' is the correct reflexive pronoun to use when referring back to the singular subject 'a person.' It is important to match the reflexive pronoun with the singular noun. 'Yourself' and 'Themselves' are plural forms and do not agree with the singular subject 'a person.' 'Itself' is used for inanimate objects, not for people. Therefore, 'Oneself' is the most suitable choice in this context.

Correct Answer: A

Rationale: The correct answer is 'Play' because 'Children' is a plural subject and requires the base form of the verb. When referring to a plural subject like 'Children,' the verb should be in its base form without an added 's' or 'ed.' In this context, 'Play' is the appropriate form to use to match the subject 'Children.' Choice B, 'Plays,' is incorrect because it is the singular form of the verb and does not agree with the plural subject 'Children.' Choice C, 'Played,' is incorrect as it is the past tense form of the verb and does not fit the present tense context of the sentence. Choice D, 'Playing,' is incorrect as it is the present participle form of the verb and does not match the simple present tense needed in the sentence.

Correct Answer: C

Rationale: The correct answer is 'Was elected' as it is the passive voice construction needed in this context. The sentence is referring to an action that happened to John F. Kennedy (being elected president), so the passive voice 'was elected' is the appropriate form to use in this sentence. Choice A, 'Elected,' is incorrect because it is the active voice and does not fit the sentence structure. Choice B, 'Was electing,' is incorrect as it is the continuous form of the verb, which is not suitable in this sentence. Choice D, 'Had elected,' is incorrect because it implies a past perfect tense which is not required in this context.

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.