Problem: How does the sentence end?

The children didn't understand the material from the book so the teacher displayed the video because the 
Answer: book was complicated.

Problem: How does the sentence end?

The violets in the garden of Natalie grew much shorter than Rebecca's because 
Answer: Rebecca is great at gardening.

Problem: How does the sentence end?

We removed the plants from the bathroom and added flowers, as the 
Answer: flowers were making it smell better.

Problem: How does the sentence end?

The care provider had to switch from bandages to gauzes, as the 
Answer:
bandages were useless against the bleeding.