Under what circumstances can the English proficiency exam requirement be waived?

TOEFL is not required if an applicant satisfies one or more of the following conditions:

a. Citizenship of Australia, Canada, Great Britain, Guyana, Ireland, New Zealand, United States, an Anglophone country of Africa, or an English speaking country of the Caribbean.
b. A college or university degree earned in the United States or in one of the countries listed above.
c. A degree earned from the American University in Beirut, American University in Bulgaria, American College in Greece or from Bogazigi University.
d. Current enrollment as a full-time student who will have completed two academic years of college/university work in the United States prior to the date of anticipated entrance at the University of Massachusetts.