---Whose book is this? There is no name on it.---Let me see. Oh, it’s          . I lost it a few days ago. 

--- Did your classmates have a good time in the Disneyland last weekend?---Yes. They enjoyed _________ very much.

I think _________ necessary for students to take an interest in all subjects.

—Who is the boy over there?—It’s ______ brother.

There will be a stamp show in the museum ______ we visited last week.