Problem: How does the sentence end?

Neil was a better museum docent than Lawrence because
Answer: Neil always read up on the new exhibits.

Problem: How does the sentence end?

Rebecca showed Jennifer how to heal a fever by herself.
Answer: Rebecca sure was knowledgeable.

Problem: How does the sentence end?

So
Answer: Robert was confident because Randy forgot to study for the upcoming test and Robert studied.

Problem: How does the sentence end?

Kevin took very difficult courses in university not like Ian, because
Answer:
Ian was studying lazily.