Write the plurals of the following nouns, consult the dictionary if necessary:
place, page, judge, knife, problem, lawyer, scientist, action, crime, thief, court, law, witness, victim, address, face, loss, reply, lady, brush, guy, portfolio, mother-in-law, enemy, sheep, ship, criterion, datum, formula, possibility, crisis, mischief-maker, extremity, lie, youth, journey, policeman, investigator, criminal, subject, student, question, academy, university