[Q]: How does the sentence end?

The curtains were an item to be mended before the rugs in the basement, since the 

[A]: curtains were visible.


[Q]: How does the sentence end?

The vitamins gave me much better endurance than the energy drinks, so I disregarded the 

[A]: energy drinks from then on.


[Q]: How does the sentence end?

A goldfish was a boring pet for Matthew but Samuel loved it, as 

[A]:
Matthew wanted more interaction with a pet.