用括号里的词的适当形式填空。 
1. I have lost the address. What______ I _______(do) ?
2. Could you please______ (not laugh) at others?
3. After an hour, they _______ ( finish)their homework and ______(go) shopping.
4. The parents are always________ (complain)about their children's rudeness(无礼、粗鲁).
5. They don't know why you talked to them so _______(angry) .
—Shall we take a taxi?
—No, we         . It’s not far from here.
[     ]
A. can’t
B. mustn’t
C. shouldn’t
D. needn’t
—John, you _____ go out to play until your homework _____.  
—OK, Mum.
[     ]
A. must; finishes
B. can't; is finished
C. can't; has finished
D. needn't; finishes
—Who's that woman with Ann?
—I'm not sure. It _____ be her mother.
[     ]

A. may            
B. can          
C. must

—You _______ be happy with the strong public support you've received.
—Yes,you're right.I'm really excited.
[     ]
A. may
B. can
C. must
D. need
Tom,  you  _______  play with  the  knife. You______ hurt yourself．
[     ]
A. won't; can't            
B. mustn't; may  
C. shouldn't; must      
D. can't; should
—Must I turn down the radio now?
—No, you        .
[     ]
A. mustn't
B. needn't
C. can't
D. won't
You ________ stop when the traffic light turns red.  
[     ]
A. can  
B. had better    
C. need
D. must
—Is that your teacher?
—That_____be Mr.Wang. He has gone to Japan with his wife.
[     ]
A. can't
B. mustn't
C. may not
The lady in this photo __________ be over fifty! She looks so young!
[     ]
A. mustn’t          
B. must                
C. can’t              
D. can
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