Problem: How does the sentence end?

Brian wanted to teach Robert how to paint using watercolors but 
Answer: Robert was a bad learner.

Problem: How does the sentence end?

Despite attending school together, Mary did not want to be friends with Elena. 
Answer: Elena thought that they were generally nice and kind to other people.

Problem: How does the sentence end?

Laura installed a new car seat in the car for Jessica, then 
Answer: Laura moved on to the next car.

Problem: How does the sentence end?

William knew pregnancy much better than Derrick , so 
Answer:
Derrick made sure to be elsewhere for the birth.