whose book is it 加上插入语do you think ,后边就要变成it is

问题描述:

whose book is it 加上插入语do you think ,
后边就要变成it is

whose book , do you think , is it ?
不是玩笑,外国人这么说。
要是做题Do you think whose book it is?

Do you think whose book it is?

Whose book do you think it is?