Problem: How does the sentence end?

After being happy for a bit, Raul decided to be a little more productive because the
Answer: happy people felt unfulfilled later on.

Problem: How does the sentence end?

At the barbecue, the collard greens were less of a hit than the mashed potatoes. The
Answer: mashed potatoes must have been seasoned just right.

Problem: How does the sentence end?

Kenneth spends a lot of time on Facebook but Brett does not.
Answer: Brett has a few Facebook friends.

Problem: How does the sentence end?

Amy was allergic to cats but Samantha was not, so
Answer:
Amy was nervous to go to the new cat cafe.