-Do you know the boy________ is sitting next to Peter?-Yes. He is Peter's friend. They are celebrating his ________ birthday.
They had a pleasant chat _______ a cup of coffee.
Will you ________ playing basketball?
________ you met the foreigner from Canada?
She is a bit shy and _______ stand up and answer the teacher’s questions.
The teacher asked Mary _______ she could tell him the general idea of the poem.