--- Do you know the boy________ is sitting next to Peter? --- Yes. He is Peter’s friend. They are celebrating his ________ birthday.
— Hi, Li and Lucy, are you classmates? — Yes, _____.
Let ______ have a look.
—What is twelve and five?—It’s ________.
Tom _________ my friend. Tom’s two brothers _________ my friends too.
—________—I’m fine. Thank you.