Don't for get ______ to me when you get to Beijing你到了北京以后别忘了给我写信（翻译填字数不限）

Don't for get ______ to me when you get to Beijing你到了北京以后别忘了给我写信（翻译填字数不限）
Don't for get ______ to me when you get to Beijing你到了北京以后别忘了给我写信（翻译填字数不限）

Don't for get ______ to me when you get to Beijing你到了北京以后别忘了给我写信（翻译填字数不限）
Don't for get (to write )to me when you get to Beijing