of with in
Ladies and Gentlemen,
Thank you for coming to attend the graduate ceremony.First of all,I'd like to  congratulate  all the students who are here today.I remember  meeting  all of you when you were just starting Grade 7 at this school.You were so full of energy and thirsty  [MASK]  knowledge.And some of you were a little difficult to deal with!But today,you've all grown up so  much  and I am so proud of you.