Her hair became gray ____ the passing of the years
The old woman ______ her sons and daughter ______ and see her from time to time.
Harry Potter is such an interesting book ________ all kids like to read.
Another primary school is reported ______ for children in Wenchuan now.
She had no idea how it ______ that her husband met with the same trouble.
–I’ll ask the teacher about the noun clause. I’m very puzzled about it. --That’s just ______ most of us have doubt.