Mary wants________.
—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.
—I can't find any ______to show my thanks to you.—You are welcome.
Look! There are some children_______with a ball over there.
—This computer doesn't work.—Really?I'll have it _______tomorrow.
—Thank you for taking me around your school, Ruby.—_____________.