Great changes ________in my hometown and some new buildings ________.
[     ]
A．have taken place；have appeared
B．have been taken place；have appeared
C．have taken place；have been appeared
D．were taken place；were appeared
Recently some Chinese experts________that another law on wildlife protection________as
soon as possible.
[     ]
A．suggested；must be passed
B．have suggested；be passed
C．have suggested；pass
D．suggested；would be passed
Tom is so lazy that it is the third time that he _____ late this week.  
[     ]

A. is coming      
B. comes          
C. came            
D. has come

-Look! Somebody       the sofa.    
-Well, it wasn’t me. I didn’t do it.
[     ]
A．is cleaning
B．was cleaning
C．has cleaned
D．had cleaned
I have lost one of my gloves. I ________ it somewhere.
[       ]
A. must drop      
B. must have dropped
C. must be dropping  
D. must have been dropped
— Have you ever been to Xiushui No.1 High School?  
— No. It is the first time that I ______ to Xiushui.  
[     ]
A. come      
B. have come      
C. am coming    
D. came
— Have you ever been here before?
— This is the second time I________to the Great Wall.
[      ]
A. comes  
B. have been
C. came  
D. had come
As a result of the use of the new technology，the production of this product________50 percent.
[     ]
A．has risen to  
B．has been raised to
C．has risen by  
D．has been risen by
— Have you seen the film before?
— No.This is the first time that I________ it.
[     ]
A. see  
B. saw
C. have seen  
D. had seen
It's the second time that I________in America.
[      ]
A. have been    
B. had been
C. am    
D. was
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