[Q]: How does the sentence end?

My mom bid on a gold necklace instead of a diamond one at the auction as the

[A]: gold was cheaper.

[Q]: How does the sentence end?

She decided to exercise on the bike instead of the treadmill because the

[A]: treadmill was less effective.

[Q]: How does the sentence end?

After her vacation in Tahiti, instead of using moisturizer, Angela used butter to treat her dry skin because the

[A]:
butter was in her house.