[Q]: How does the sentence end?

Brett is often anxious and under much stress at work, Samuel has a calm personality.

[A]: Brett constantly worries.

[Q]: How does the sentence end?

Samantha was allergic to peanuts and Monica was not so

[A]: Samantha could not eat the peanut butter cup grandma gave them..

[Q]: How does the sentence end?

The book doesn't fit into the oak bookcase shelf because the

[A]:
shelf is too short.