Problem: How does the sentence end?

The security guard removed Robert but not Dennis from the nightclub because
Answer: Robert was ill-behaved.

Problem: How does the sentence end?

The decisions for Victoria were a lot harder than those of Christine, because
Answer: Victoria was undecided.

Problem: How does the sentence end?

Charlie sewed the buttons from his jacket onto his coat, because the
Answer: coat was salvageable.

Problem: How does the sentence end?

Sarah was very good at ballet, but not Betty because
Answer:
Betty practiced her dance rarely.