There is ________ useful book on the desk， _________ useful book belongs to my brother．

We are waiting _______ the next bus now.[ ]

Do you know the boy________ is sitting next to Peter? — Yes. He is Peter’s friend. They are celebrating his ________ birthday.

They are going to learn to play______ guitar and play ______ basketball

I’m sorry you’ve missed the train. It ten minutes ago.