Riddle #829

Question: A smooth dance, a ball sport, a place to stay, an Asian country, and a girl's name.

What's her name?

Question: What do you call a sad bird?

Question: What has a bed that you can't sleep in?

Question: How are doughnuts and golf alike?

Question: What can be broken but never forgotten?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?