1. —Must I water the flowers now， mum？
　　—No，you_____. You_____do it later.
　　A. mustn’t； must B. mustn’t； may
　　C. needn’t； may
　　2.—______I know by what time you want the
　　project to be done？
　　—By the day after tomorrow. ______ you finish
　　it on time？
　　A. May； Can B. Must； Need C. Could； Must
　　3.—Who’s singing in the garden？
　　—It_____be Mr. Brown. He always practices
　　singing at this time.
　　A. must B. can’t C. need
　　4. I ______follow you. Would you please repeat it？
　　A. can’t B. mustn’t C. needn’t
　　5. —Must I hand in my homework now， Mr. Smith？
　　—No， you _______.
　　A. can’t B. shouldn’t C. needn’t
　　6.—Excuse me， may I keep the book a little longer？
　　—Sorry. You ________ return it today.
　　A. must B. mustn’t C. can
　　7. —Is the man over there Mr. Brown？
　　—It ______him. He has gone to Brazil to watch
　　the 2014 FIFA World Cup.
　　A. may not B. can’t be C. shouldn’t
　　8. Children _______ sit in the front seat of a car.
　　It’s too dangerous.
　　A. need B. needn’t C. mustn’t
　　9. —I forgot to bring my dictionary. Could I use yours？
　　—Yes， you ______.
　　A. can B. must C. could
　　10. The man is feeling much better now， so you ______
　　call a doctor.
　　A. needn’t B. can’t C. mustn’t
　　11. —Is the long-haired man Bruce？
　　—No， it _______ be him. He’s in New York now.
　　A. can’t B. mustn’t C. needn’t
　　12. People _______ wait until the traffic becomes
　　green. That’s the traffic rule.
　　A. must B. can C. need
　　13. If you _____ smoke， please go outside .
　　A. can B. may C. must
　　14. After you read the article “Why fast food is slowly
　　killing you？”， you______stop eating fast food.
　　A. can B. may C. have to
　　15. Look at the “No parking” sign. You _____park
　　your car here.
　　A. should B. must C. mustn’t