题目内容

—Tom is never late for work. Why is he absent today?  
—Something _____ to him.
[     ]
A. must happen                
B. should have happened  
C. could have happened          
D. must have happened
D
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You ____ take good care of   your luggage when you are traveling on a train.    
[     ]
A. can            
B. may        
C. must      
D. will
— May I take this book out of the reading room?
— No, you _____. You read it here.
[     ]
A. mightn't      
B. won't        
C. needn't      
D. mustn't
— Why are those people gathering in the middle of the street?
— I don't know. There ______ be an accident.
[     ]
A. must            
B. would           
C. can          
D. might
Kate didn't come yesterday, or you ________ her.
[     ]
A. might have seen  
B. were to see        
C. had seen          
D. would see
Try as you _______, he won't listen to your advice on the potential dangers of smoking.
[     ]
A. can             
B. may            
C. dare                
D. will
I _____ have been more than six years old when the accident happened.

 [     ]

A. shouldn't
B. couldn't
C. mustn't
D. needn't
The World Health Organization warned that Asian countries _______ attentive to bird flu since 
Asia _____ got rid of the disease completely.
[     ]
A. should keep; has          
B. must remain; has not
C. ought to stay; has been      
D. shall be; has not been
— Must I go to the gym three times a week?
— No, you _____. Twice a week is OK.

[     ]

A. mustn't
B. needn't
C. can't
D. shouldn't

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