您要查找的是不是：
- 有人知道来历吗? Does anyone know the history?
- 知道 be aware of
- 你知道鲍伯的来历吗? A: Do you know anything about Bob?
- 吗 morphine
- 不知道 be insensible of
- 那么你能讲一讲它的来历吗? Can you tell us something about it?
- 他的邻居中很少有人知道他的过去。他过着孤独的生活。 Few of his neighbours knew about his past. He lived quite to himself.
- 知道的 aware
- 来历 history
- 想知道 wonder
- 是吗 is that right
- 不知道的 unaware
- 可以吗？ Any chance?
- 我知道 I see
- 你好吗？ How are you?
- 许多父母寄希望于他们的孩子们，可是很少有人知道该做些什么。 A lot of parents invest in their children, however, few of them know what to do.
- 对吗 is it right
- 知道了 Roger
- 是吗？ Is it really?
- 不是吗 isn't it
