Problem: How does the sentence end?

Mary entered the classroom before Kayla was able to because 
Answer: Kayla arrived at the school later.

Problem: How does the sentence end?

The clothes of Kyle look more shabby than Donald's because 
Answer: Donald has a larger salary to buy clothes with.

Problem: How does the sentence end?

On the island the weather was frequently unpredictable. It was supposed to rain this weekend and the 
Answer: rain would be very heavy.

Problem: How does the sentence end?

Rachel was better at asking and answering questions than Laura, so 
Answer:
Rachel won the debate.