[Q]: How does the sentence end?

Cross-training for runners mixes the intensity of sprinting with the mildness of jogging, since the

[A]: mildness is necessary for longer runs.

[Q]: How does the sentence end?

Erin could not find a bra that fit so Carrie offered to make a custom one.

[A]: Erin was thrilled with it.

[Q]: How does the sentence end?

Matthew quickly reacted to avoid the car crash that Derrick never saw coming, because

[A]:
Matthew had fast reflexes.