—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.
A. may, mustn't B. can; can't
C. must; can't D. must; mustn't
—I can't find any ______to show my thanks to you.
—You are welcome.
A. picture B. energy C. food D. expressions
Look! There are some children_______with a ball over there.
A. playing B. play
C. played D. to play
—This computer doesn't work.
—Really?I'll have it _______tomorrow.
A. repaired B. repair
C. to repair D. be repaired
—Thank you for taking me around your school, Ruby.
—_____________.
A. Never mind B. Of course not
C. Don't mention it D. No problem
—What are you looking for?
—I'm looking for something_________ I can use to cover the box.
A. that B. what C. who D. which