—Must I return the book this morning?
—No, you             . But you               return it before supper.
[     ]
A. needn't; must
B. mustn't; can
C. mustn't; may
D. can't; need
—Why do you think the man is running?
—He might ____ to catch a bus.
[     ]
A. running
B. is running
C. be running
You              worry about him. He will get well soon.

[     ]

A. needn't
B. can't
C. mustn't
You             be careful with fire in the forest. It's dangerous.
[     ]
A. must
B. may
C. can
— Mum, I feel terrible today. I think I ______ catch the A / H1N1.
— Don't worry. But it can't be the A / H1N1. Follow the doctor's advice and you'll get well soon.
[     ]
A. must
B. may
C. can
— Will you stay for lunch? 
— Sorry, ______. My brother is coming to see me.

[     ]

A. I mustn't
B. I can't
C. I needn't
D. I won't

—I think Miss Gao must be in the library. She said she would go there.
—No, she ________ be there. I have just been there..

[     ]
A. can't
B. mustn't
C. needn't
D. wouldn't
A bridge must              over the river.
[     ]
A. makes
B. being made
C. build
D. be built
Jane            to carry heavy things. She is very strong.
[     ]
A. can
B. able
C. is able
D. could
—Look! Miss Mu is on the other side of the street.
—It _____ be her. She's gone to Tibet.
[     ]
A. mustn't
B. shouldn't
C. won't
D. can't
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