It takes us _______ hour or more to go to my hometown by _______ train .

A. an ;a                          B. a ; an                      

 C. an ; 不填                          D. a ; 不填

----How long does it take us to go to your hometown from here?

  ----It takes us      hour or more to go to my hometown by        train.

  A. an; a    B. a ; an    C. an; /    D. a; /

-How long does it take us to go to your hometown from here?

-It takes us ________ hour or more to go to my hometown by ________ train．

1. A.
   an; a
2. B.
   a; an
3. C.
   an;/
4. D.
   a;/

 —How long does it take us to go to your hometown from here?

—It takes us ________ hour or more to go to my hometown by ________ train.

A. an; a            B. a ; an           C. an；/            D. a；/

----How long does it take us to go to your hometown from here?
----It takes us      hour or more to go to my hometown by       train.