Question

Will you be able to return this new magazine ________?

1. A.
   in two weeks' time
2. B.
   two weeks later
3. C.
   after two weeks
4. D.
   about two weeks

Answer 1

A
in是介词，表示从现在算起的“一段时间之后(内)”，常用在将来时的肯定句里。