Choose the correct options

1. Do you want to come [across|back|out|round]
   and meet my parents?
2. I came [across|back|out|round]
   some friends of mine when I was at the theme park.
3. I've just come [across|back|out|round]
   from India. It was an exciting journey.
4. He is a very popular writer. When his new book comes [across|back|out|round],
   it sells out in a few days.