[Q]: How does the sentence end?

The excavator was abandoned and they brought in a crane to build the house, because the

[A]: crane proved essential to the process.

[Q]: How does the sentence end?

The painting wouldn't fit in the frame, but the map did, because the

[A]: map was smaller.

[Q]: How does the sentence end?

Ordering strawberry cheesecake after dinner was a must for Steven but not Donald because

[A]:
Donald liked plain cheesecake.