[Q]: How does the sentence end?

It's better to use natural shampoo for your hair than synthetic shampoo as the

[A]: natural shampoo is better for your hair.

[Q]: How does the sentence end?

Brian needed help assembling the bed frame when Joel showed up at the front door.

[A]: Joel offered to help.

[Q]: How does the sentence end?

At the orchard, Brian picked less apples than Joseph, because

[A]:
Joseph picked apples very quickly.