---Look at the glasses on the desk.Are they David’s?---They belong to him.I saw him go out with glasses just now.
_______ readers came to the bookshop but only __________ of them got the book.
---Are you _______ you know the way? ---I am afraid not.
There is only __________milk left.We need to buy some more.
---Is there ________in the room?----No,there’s________there.
---Whose trousers are these? Are they ______? ---No, they are _____.