After playing football about half an hour, the students took _________ rest.

A. a little minute’s                B. a little minutes’

C. a few minute’s                 D. a few minutes’ 

I'll give you _______ to _______ the problem.

1. A.
   a few minute's time; think about
2. B.
   a few minutes' time; think about
3. C.
   a few minute's time; think for
4. D.
   a few minutes' time; think for

Mr Smith is going back to Canada ________.

1. A.
   in a few day's time
2. B.
   in a few days' time
3. C.
   in a few day time
4. D.
   in a few days time