[Q]: How does the sentence end?

The person used baking soda instead of toothpaste to clean their teeth because the 

[A]: baking soda would make their teeth whiter.


[Q]: How does the sentence end?

Mary chose to buy her friend chocolates over flowers for the Birthday. The 

[A]: flowers were too expensive.


[Q]: How does the sentence end?

Ted prefers writing on paper over writing on computer, because the 

[A]:
computer writing is modern.