Problem: How does the sentence end?

We had to throw out the soap and use acid, as the
Answer: soap was ineffective in removing the bloodstains.

Problem: How does the sentence end?

The art store sold lots of canvas but very few frames, as
Answer: canvas were so inexpensive.

Problem: How does the sentence end?

The tea went down smooth with some honey in it, but not with lemon, as the
Answer: lemon had a more contrasting taste.

Problem: How does the sentence end?

Katrina was better suited to milking the cow than Natalie because
Answer:
Natalie had grown up in the city.