东京大学修士学费:how can i change my username?

how can i change my username? how can i make my nail shiny? how can i improve my oral english HOW I CAN EXPRESS MY SELF How can I have my boyfriend? How can I improve my spoken English? I left my hometown to Singpore, then how can I do to help my health If my girlfriend is japanese,how can i face to my chinese friend,and my family? How can I do??? how can I do??