Human Growth and Development teacher has been gone and I'm locked out of my online textbook. If no one can give me answers, could you at least tell me what other public resources I could use to find this information.

Asubstitute is standing at the halfway line waiting to enter the match at the next stoppage of play the ball has gone over the touchline for throwing and referee allows for the substitution to substitute wants to take the throw-in does the substitute first have to enter the field of play before being allowed to take the throw-in