Problem: How does the sentence end?

Joel was a realist unlike Robert, so
Answer: Robert was the one that developed a crush on a fellow classmate.

Problem: How does the sentence end?

Maria was wearing their hair in long braids but Rebecca was not as
Answer: Maria had long hair.

Problem: How does the sentence end?

Mark never pays with his debit card and uses the credit card instead, because the
Answer: credit card is more safe.

Problem: How does the sentence end?

Joel asked Nelson for help with a paragraph for his paper as
Answer:
Nelson had wrote a book.