The sentences that use a time-related term correctly are:
- Confucius was teaching in China in B.C. 500.
- Homer composed the Iliad and Odyssey in about B.C.E. 750.
- The Roman Empire fell to Germanic Tribes in A.D. 476.
- The Black Death began in Europe in 1347 C.E.
(Note: The sentences listed are duplicates in their wording but differ only in punctuation with or without the space before the period. Both forms are considered correct, so both versions of each sentence qualify.)