Problem: How does the sentence end?

Ryan learned how to shoot a rifle from Lawrence since 
Answer: Ryan had never owned a gun before.

Problem: How does the sentence end?

The teacher took students off of the playground and put them on the bus until the 
Answer: bus was full.

Problem: How does the sentence end?

Joel purchases more nuts and seeds at the grocery store than Eric because 
Answer: Joel owns a pet squirrel.

Problem: How does the sentence end?

Felicia knew how to soothe the eczema but Jessica did not because 
Answer:
Jessica was a dermatologist for only a week.