It's known that the paper for books and magazines ________ from wood.
[     ]
A．are made
B．is made
C．has been made
D．is being made
Paper ________ by Cai Lun in China.
[     ]
A．was invented  
B．is invented
C．invented  
D．has invented
- Do you know a factory ________ here next year?
- Yes. It's the biggest one.
[     ]
A．will build
B．builds
C．is built
D．will be built
After Dong Hai Bridge ________, it became a new tourist attraction.
[     ]
A．completed  
B．complete
C．is completed  
D．was completed
—Look! The tree is growing well. When _____?
—Three years ago.
[     ]
A. was it planted          
B. did it plant  
C. will it be planted      
D. is it planted
Can this book ______ without a dictionary?              
[     ]
A. to read          
B. be readed          
C. be read
A talk on Chinese history _____ in our school next week.

[     ]

A. is given
B. has been given
C. will be given
D. gives
―I want to be a doctor.
―Doctors           greatly in every part of the world, I think.
[     ]
A. need      
B. are needed    
C. are needing    
D. will need
The moon          by human beings already.    
[     ]

A. was been visited              
B. will be visited     
C. had been visited             
D. has been visited

This kind of machine ______ cutting paper.
[     ]
A. used for
B. is using for
C. is used for
D. is used as
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