Time flies, doesn’t it? I can’t believe it’s been nearly five years! There have been many ups and downs during these years, but your smiling faces, kind words and diligence have made this experience all worthwhile. I’ve learned so much from all of you that I think I could say that I’m your student! Your kind words have encouraged me and your challenging questions have pushed me to better understand my own language. I’ve worked with students as young as two and as old as 80; from toddlers to octogenarians. It has been a true joy! Thank you for helping me reach this milestone! May all of you have many happy days of studying ahead!