Could you tell me __________?who you are waiting for和where you live in选哪个
原因是 where 表示“在哪里”,是用来提问地点状语,与“in + 地点名词”对应.所以不能加 In,要不就是重复.如果将where 换为 which place,就必须加 In 了,因为 which 只对 地点名词提问.Can you tell me which place you live in?这个就是用 where 和which place 提问地点状语的区别.
这个区别在定语从句选择关系代词/关系副词中尤为常见：
如：这就是我和我的女朋友第一次邂逅的那个公园.
This is the park in which i met my girl friend the first time.
或者This is the park where i met my girl friend the first time.
找到了答案,也希望对别的同学有帮助