[Q]: How does the sentence end?

When at the bookstore, Emily bought a comic book for Natalie because 

[A]: Emily wanted to surprise them.


[Q]: How does the sentence end?

My mom bought me tea that was worse than the coffee, because the 

[A]: coffee was good quality.


[Q]: How does the sentence end?

Fred wanted to retire, but he needed to invest in either stocks or bonds. He chose the 

[A]:
bonds because it was safe.