Final answer:
The sentence that uses correct punctuation is: I am almost ready to graduate but I have to take two more classes.
Step-by-step explanation:
The sentence that uses correct punctuation is: I am almost ready to graduate but I have to take two more classes. In this sentence, the comma is correctly used to separate two independent clauses connected by the coordinating conjunction 'but'.
Examples of incorrect punctuation in the other sentences include:
- The comma after 'soon' in the first sentence is not needed because it interrupts the flow of the sentence.
- The comma after 'cat' in the second sentence is unnecessary because it separates the subject and verb of the sentence.
- The comma after 'along' in the third sentence is incorrect because it separates the subject and verb of the sentence.
- The comma in the last sentence is unnecessary because it separates a subject and verb, creating a run-on sentence.
Learn more about Punctuation in English sentences