我不知道他们在哪里日子过的。

I wonder where they are the days we had the songs.

youdao

我不知道他们在哪里度假。

I have no idea where they are spending their holidays.

youdao

我不知道他们在哪里。

I don't know where they are.

youdao

我不知道他们曾经住在哪里。

I don't know where they once lived.

youdao

我不知道他们曾经住在哪里。

I don't know where they once lived.

youdao