Rules
When do we use abbreviations Jr., Sr.
After a full name (first and last name).
Is it acceptable to use & or + for "and" in formal writing?
No, you need to write "and" out.
Where do we place A.D. and B.C.?
A.D. is before the year.
B.C. is after the year.
When is the only time we spell out "doctor"?
When it is used by itself without a name.
When can we abbreviate Reverend and Honorable?
Bonus: What is the exception to this rule regardless of full name?
When used with full name.
Bonus answer: When "the" comes before Reverend or Honorable, spell out.