[Q]: How does the sentence end?

When Matthew learned how to speed read, Brian criticized him since

[A]: Brian had a learning disability.

[Q]: How does the sentence end?

Mary is taking care of Laura's babies at her home so

[A]: Laura is saying good-bye to the babies.

[Q]: How does the sentence end?

Many cultures bury their dead in a grave and don't use a headstone, the

[A]:
grave doesn't have the name of the deceased.