Answer:
The error is :-
The sentence must be Who is yelling not whose yelling. Correct Sentence would be
"Who is yelling?" asked the teacher
Cause they both want to be the leader of the team easy as that
Yea so the answer is the person who answered before me lol
It depends. In most cases emails kind of have a professional stigma following them and are sent to ask questions or to gain information or inform the receiver so it’s best presented in a formal way.
In other cases such as a letter to a friend it can be as informal as the writer would like. Overall though I would say False, emails require professionalism.