英语：把主语we,they,she,David和谓语know,think,have造12个句子

We know him, but we didn't recognise him.
They know him, but they didn't recognise him.
She knows him, but she didn't recognise him.
David knows her, but he didn't recognise her.
We think it is right.
They think it is right.
She thinks it is right.
David thinks it is right.
We have some books.
They have some books.
She has some books.
David has some books.
再问： 太感谢了！回答好好！