I, Me, My, Mine, ETC.

The correct answer is "mine" because it is used to indicate possession. In this case, the speaker is referring to the blue car that they bought last week, so "mine" is the appropriate pronoun to show that the car belongs to them.

The correct answer is "She" because it is the pronoun that agrees with the subject "My sister" in terms of gender and number. "She" is used to refer to a female subject, which is the case here.

The correct answer is "our" because it is the possessive form of "we" and shows that the speaker and at least one other person did not do their homework.

The correct answer is "your". In this sentence, the speaker is asking if the pen belongs to the person they are speaking to. "Your" is the possessive form of "you" and indicates ownership by the person being spoken to.

The correct answer is "their" because it is used to show possession. In this sentence, David and Michael are the ones who ate lunch, so "their" is used to indicate that the lunch belonged to them.

The question is asking for the correct possessive form of the word "pen" in relation to the person being addressed. The correct answer is "yours" because it indicates that the pen belongs to the person being spoken to. "Your" is incorrect because it is used to describe something that belongs to the person being spoken to, but not specifically the pen. "Our" and "us" are also incorrect because they refer to a group of people and not the individual being addressed.

The word "its" is the correct answer because it is a possessive pronoun that shows ownership. In this sentence, "its" indicates that the ball belongs to the cat.

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The correct answer is "her" because it is the possessive form of the pronoun "she". In the sentence, the phrase "after you read it" indicates that someone will be receiving the book after the reader is done with it. Since "her" is the possessive form of "she", it implies that the book should be given to a female person.