Problem: How does the sentence end?

It was hard for Matthew to locate the park compare to Nelson, because 
Answer: Matthew forgot his map.

Problem: How does the sentence end?

Rachel was a much better cook than Mary although 
Answer: Rachel couldn't even boil eggs correctly.

Problem: How does the sentence end?

Even though it traveled on target, the ball could not fit in the hole because the 
Answer: ball was too big.

Problem: How does the sentence end?

The doctor drew the blood more often to test for the bacteria than the virus because the 
Answer:
virus was more trivial.