You____eat____food if you want to keep slim. 
[     ]

A. should;little    
B.must: little
C. should;less    
D.should: more

—I have a fever.
—You _____ drink lots of water.
[     ]
A. are  
B. should  
C. don't  
D. shouldn't
With the help of the new technology, you _____ e-mail your friends by mobile phone.      
[     ]
A. can          
B. must            
C. need              
D. should
Don't go out to play. You ________ finish your homework first.
[     ]
A. must
B. have
C. had
D. had to
The desk is not dirty. You _____  clean it.  
[     ]
A. mustn't              
B. shouldn't  
C. needn't              
D. can't
句型转换。
1. There will be more rain in 100 years.(改为否定句)
   There _______ _______ more rain in 100 years.
2. He will go on a picnic in two days.(对划线部分提问)
    _______ _______ _______ he go on a picnic?
3. He'll work as a reporter when he is older.(改为同义句)
    He'll work as a reporter when he_______ _______.
4. I  finished my homework alone.(改为同义句)
    I  finished my homework _______ ________.
5. I  think there will be robots in everyone's  home.(改为一般疑问句)
    ________ ________ _______ there _______ ________robots in everyone's home?
—Will you _______ take part in the  school sports meeting next week?    
—I hope so.  
[     ]
A. can                      
B. be able to  
C. must                      
D. may
—Can you come to have dinner with me this evening?  
—I'm afraid not. I _____ take care of my  grandmother. She is ill.    
[     ]
A. can't                        
B. have to    
C. may                        
D. could
Jim ________ back in ten minutes.
_______ he won't come back.
[     ]
A. maybe; May be
B. may be; May be
C. maybe; Maybe
D. may be; Maybe
The work is too hard for him. He _______ finish it on time.

[     ]

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