[Q]: How does the sentence end?

Amy's hair continued to grow very long and thick, while Felicia's hair was thin and brittle.  This is because 

[A]: Felicia never took vitamins.


[Q]: How does the sentence end?

Ryan was elated when the seeds grew for Leslie's pot, and 

[A]: Ryan congratulated their growth.


[Q]: How does the sentence end?

The scientist poured the fluids from the test-tubes into the beakers until the 

[A]:
beakers were full.