If you are traveling ________ the customs are really foreign to your own, please do as the Romans do．

1. A.
   in which
2. B.
   what
3. C.
   when
4. D.
   where

If you are traveling_______the customs are really foreign to your own,please do as the Romans do.

A.in which            B.what           C.when                 D.where

If you are traveling_______the customs are really foreign to your own, please do as the Romans do.

A. in which    B. what

C. when      D. where

If you are traveling ______ the customs are really foreign to your own, please do as the  Romans do .

       A．in which               B．what                   C．when                  D．where

 If you are traveling     the customs are really foreign to your own, please do as the Romans do.

A. in which      B. what         C. when          D. where