Problem: How does the sentence end?

Ian bought a new cane at the medical supply store for Justin, because 
Answer: Justin was injured.

Problem: How does the sentence end?

The tripod was needed so the camera could take a shot over the wall, 
Answer: camera was just too low .

Problem: How does the sentence end?

If given the choice between math and art courses in school, Joan preferred the 
Answer: art because she was very artistic.

Problem: How does the sentence end?

Kayla wanted an inexpensive cell phone while Lindsey wanted the latest smart phone. 
Answer:
Kayla purchased a flip phone from their cell company store.