[Q]: How does the sentence end?

With the glasses you could not see to the horizon, but the lenses allowed you too, since the 

[A]: glasses were optically weak.


[Q]: How does the sentence end?

Kenneth liked to dispose of their rubbish promptly but William did not because 

[A]: Kenneth was very neat.


[Q]: How does the sentence end?

Sarah wore a jacket on a cold winter day while Jennifer forgot one, so 

[A]:
Sarah was quite warm outside.