题目内容

Every possible means ________ to prevent the air pollution, but the sky is still not clear.
[     ]
A. has been used
B. are used
C. is used
D. have been used
A
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相关题目
A new road _______ in this area next year.
[     ]
A. built                
B. builds          
C. will be built          
D. has been built
In a room above the store, where a party ____ some workers are busily setting the table.
[     ]
A. is to hold
B. has been held
C. will be held
D. is being held
The construction of the two railway lines ________ by now.
[     ]
A. has completed
B. have completed
C. have been completed
D. has been completed
----Why does the lake smell terrible?  
----Because large quantities of water_______?  
[     ]
A. have polluted                
B. is being polluted  
C. has been polluted              
D. have been polluted
Jane was elected chairman of the committee. This is the first time that a woman ______ to the post.
[     ]
A. has appointed    
B. had appointed
C. has been appointed
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— Did you move into the new house?
— No. The rooms ______ yet.
[     ]
A. were being painted
B. are painting
C. have not painted
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— Is Lucy still hunting for a job?
— Yes. She _________ for 7 months.
[    ]
A. isn't employed  
B. wasn't employed
C. isn't being employed      
D. hasn't been employed
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—Because large quantities of water_________.   
[     ]
A. have polluted                
B. is being polluted
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