Choose the best answer.

1. (Your, You're) never going to let him borrow your tools again.

Answer:
You're ( You are never going to ...

2. (They're, Their) children (are, is) a shining example of (they're, their) belief system.

Answer:
Their children are a shining example of their belief system.

3. The dog has ( it's, its) collar on, and (it, they) will (walk, walks) well.

Answer:
The dog has its collar on, and it will walk well.
(lousy sentence!)

All three are correct ... and yes, I agree with you about the last sentence!

The best answer for each question is as follows:

1. You're (You are never going to let him borrow your tools again.)

Explanation: In this sentence, "You're" is the correct answer because it is a contraction of "you are." To determine the correct usage, you can replace the contraction with the full form of the pronoun and the verb. So "You're" becomes "You are" in the sentence, making it grammatically correct.

2. Their children are a shining example of their belief system.

Explanation: In this sentence, "Their" is the correct answer because it shows possession. "Their" indicates that the children belong to them. To determine the correct usage, you can ask the question "Whose children are they?" The answer to that question is "Their children."

3. The dog has its collar on, and it will walk well.

Explanation: In this sentence, "its" is the correct answer because it is used as a possessive pronoun to indicate ownership. "Its" is used when referring to things or animals, and "it's" is a contraction of "it is." To determine the correct usage, you can ask the question "Whose collar is it?" The answer to that question is "Its collar." Additionally, "walks" should be corrected to "walk" to maintain subject-verb agreement since the subject "dog" is singular.