[Q]: How does the sentence end?

Their friend suggested that Nelson but not Joel should get a haircut because 

[A]: Nelson had long hair.


[Q]: How does the sentence end?

Natalie preferred a firm mattress while Lindsey preferred soft; when the store only had firm, 

[A]: Natalie celebrated.


[Q]: How does the sentence end?

Rebecca preferred food heated, while Katrina liked it cold, so 

[A]:
Katrina never used the microwave .