Problem: How does the sentence end?

We could only check the throat for infection using the spoon, not the stick, since the
Answer: stick was dirty.

Problem: How does the sentence end?

In school, Nick was helping Brett with multiplication tables because
Answer: Nick found math very easy.

Problem: How does the sentence end?

I decided to use conditioner instead of shampoo on my hair, the
Answer: shampoo removes more moisture.

Problem: How does the sentence end?

The nut kept getting loose as the hobbyist tried to tighten it on the bolt because the
Answer:
bolt was too small.