posted by John .
1. They will come back home in a few
2. They will come back home in a
3. They will come back home in a
couple of days.
4. They will come back home in some
(What is the difference between them?)
Oh, my! When to use or not use articles is something ingrained in native English speakers, but is almost impossible to understand if you're not. I have a Korean friend who has lived in the U.S. for about 10 years, since she was 10 years old. She's now in college and writes and speaks nearly perfect English, but still occasionally misses an article.
That said --
#s 1 and 3 are correct. #s 2 and 4 are wrong.