我在路上发现了一只狗,但我不知道它是谁的狗。 I found a dog in the road and I don't know whose it is. Who's calling please? 我在路上发现了一只狗,我不知道它是谁的狗。请问您是哪位? Who's (who is) calling please? Whose job is it to clean your kitchen floor? 请问您是哪位?在...