Problem: How does the sentence end?

By the look of things Hunter could tell that William knew nothing about making bread.
Answer: William didn't know how to make bread.

Problem: How does the sentence end?

The milk was not kept in the refrigerator like the juice was and now the
Answer: milk is rotting.

Problem: How does the sentence end?

He had a problem using the staple gun, but it was easy to use the drill, because the
Answer: drill was simplified.

Problem: How does the sentence end?

Lindsey was going on a trip to London and asked Elena how to fit in because
Answer:
Elena had previously traveled to London.