[Q]: How does the sentence end?

Bill poured the entire bag of Spinach into the mixing bowl until the

[A]: bag was empty.

[Q]: How does the sentence end?

They could not get the desk for my office up the stairwell because the

[A]: desk is too big.

[Q]: How does the sentence end?

Laura attained much better grades in school than Elena did because

[A]:
Elena did not study really hard.