If you are travelling ___ the customs are really foreign to
If you are travelling ___ the customs are really foreign to your own, please do as the Romans do.
A. in which
B. what
C. when
D. where
选D，A和B为什么不对
travel可以做及物动词么，如果可以的话，what引导宾语从句对么
A. in which
B. what
C. when
D. where
选D，A和B为什么不对
travel可以做及物动词么，如果可以的话，what引导宾语从句对么
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