In the second sentence, the reference to the dog requires the change of the article from "a" to "the."
<h3>What is the difference between "a" and "the"?</h3>
The main difference between the two articles is that "the" is definite, while "a" is indefinite.
Article "a" is indefinite because it can represent any object.
Article "the" is a definite article because it represents a specific object.
Thus, the second sentence should be re-written as <em>"I think </em><em>the</em><em> dog belongs to Mr. Smith."</em>
Learn more about definite and indefinite articles at brainly.com/question/24153047
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