—Whose book is this?—It ________be Mary's. J. K. Rowling is her favorite writer.—No, it ______ be hers . She never brings novels to school.
James is an English boy. He _____ from England.
My name ____ Jack. Liu Ying and Sun Mei ____ my friends.
—____ are you? —I’m twelve.
Are ______ her parents?
Is that a _______?