6 - Everyone, anyone, no one, and someone (also everybody, etc.) always take a singular verb, but they are often followed by a plural pronoun, except in very formal speech and writing:
· Has everyone finished their drinks/his or her drink?
· Anyone can do it if they try /if he or she tries.
· Someone's left the door open, haven't they?
* Compare every one and everyone.
- Everyone (or everybody) can only be used of people and is never followed by “of”:
- Every one means each person or thing, and is often followed by “of”.
· Everyone in the class passed the exam.
There are 16 students and every one of them passed.