Chapter 4 Exercise 80

80. Check the breed entries to list all of the Terriers, but also check for misspellings that use only a single "r" (Terier).

This one has many possible options:
FROM Breed
WHERE dbo.RegexMatch(Breed, N'Ter*ier')<> 0
Or N'Ter+ier'
Or N'(Terrier|Terier)'
Or many variations depending on how bad the spelling might be.
(There are no misspellings in the data.)