[Q]: How does the sentence end?

To increase his libido, Joe tried to get a gym membership and tried to eat vegan food but the

[A]: food was not enough.

[Q]: How does the sentence end?

The chemistry class had to chose between two abrasive chemicals in the experiment. They ended up choosing the acid over the base because the

[A]: acid was needed.

[Q]: How does the sentence end?

Michael always wanted to go on a cruise and Adam wanted to help pick the right cruise because

[A]:
Adam had recently been on a cruise.