Problem: How does the sentence end?

Since Donald told Christopher his illness,  
Answer: Christopher has spent more time on bed instead of taking care of the kids.

Problem: How does the sentence end?

The artist used the markers instead of the pens to create the bright image, since the 
Answer: markers have a sleeker look.

Problem: How does the sentence end?

The woman ignored the toilet and began to scrub the sink because the 
Answer: sink was filthy.

Problem: How does the sentence end?

It was more likely for Samuel to have fish for dinner than Robert because 
Answer:
Samuel ate a wide variety of foods.