Final answer:
The properly punctuated sentence is: "Remember when we went to Paris, France?" said Bill. Quotation marks indicate the spoken part of the sentence, while commas and question marks help separate and clarify the elements.
Step-by-step explanation:
To correctly add punctuation to the sentence provided by the student, one would write: "Remember when we went to Paris, France?" said Bill.
The proper punctuation includes quotation marks around the words spoken by the character, a comma to separate the clause from the attribution, and a question mark to indicate that the remembered event was posed as a question. When punctuating this sentence, it's crucial to identify the spoken part and to correctly punctuate and capitalize the tag, 'said Bill,' which provides information about who is speaking.