Problem: How does the sentence end?

I had to change the tire on the car but not the one on the truck because the one on the 
Answer: car was flat.

Problem: How does the sentence end?

Customers of the bakery were looking at them baking the cakes and ignored the donuts because the 
Answer: donuts were dull.

Problem: How does the sentence end?

Melinda replaced her old spray deodorant with a new gel deodorant because the 
Answer: gel was new.

Problem: How does the sentence end?

Maria asked Sarah if they knew how to setup a smart phone but 
Answer:
Sarah could not figure it out either.