Problem: How does the sentence end?

James had his shirt stained with blood and he wore a jacket over it  because the 
Answer: shirt is dirty.

Problem: How does the sentence end?

Mary bought a new Xbox from Maria when 
Answer: Maria was working at the electronics shop.

Problem: How does the sentence end?

Emily took a shorter time to work on the engine than Cynthia because 
Answer: Cynthia was not familiar with cars.

Problem: How does the sentence end?

The turkey was coated with butter and pineapple to finish it off, the 
Answer:
pineapple gave it a sweeter taste.