Problem: How does the sentence end?

Nate was unexpectedly early to his appointment today. So while waiting he compared the time on his watch to the wall clock and concluded the
Answer: watch must be running fast.

Problem: How does the sentence end?

Rebecca was a better manager than Christine because
Answer: Rebecca always tried to develop a robust plan.

Problem: How does the sentence end?

The mother quickly rushed past Natalie and to Erin because
Answer: Erin needed a change of underwear.

Problem: How does the sentence end?

Elena chose to honor Kayla at their funeral by singing a song, because
Answer:
Elena was a mourning loved one.