--______ is your house from the factory?  --It’s about twenty minutes’ walk.

A. How long     B. How soon     C. How often            D. How far

--______ is your house from the factory?  

--It’s about twenty minutes’ walk.

1. A.
   How long
2. B.
   How soon
3. C.
   How often
4. D.
   How far

--______ is your house from the factory?  --It’s about twenty minutes’ walk.