Do you know__when___ the work will be finished?
He wants to know___who___broke the window.
I want to know__when______you visit the zoo.
Please find out___when___the plane take off.
Do you know__when___ the work will be finished?
He wants to know___who___broke the window.
I want to know__when______you visit the zoo.
Please find out___when___the plane take off.