Question

Gina hopes to go to visit Niagara Falls ________.

1. A.
   some days
2. B.
   one day
3. C.
   sometimes
4. D.
   some times

Answer 1

B
some days“几天”；one day=someday=sometime“某一天”；sometimes=at times“有时”；some times“几次”。本题意为“将来某一天”。