—Tom, why don"t you do your homework in your room?    —I _____it already.    [  

—Tom, why don"t you do your homework in your room?    —I _____it already.    [  

题型:同步题难度:来源:
—Tom, why don"t you do your homework in your room?    
—I _____it already.    [     ]
A. did                    
B. have done    
C. do                    
D. will do
答案
B
举一反三
—Tom, the workers _____our new library already.  
—Really? I"ll go there and borrow some books.    [     ]
A. decorated                
B. are decorating    
C. have decorated            
D. were decorated
题型:同步题难度:| 查看答案
Our country_____rapidly in recent years, but she is still a _____ country.    [     ]
A. develops; developing    
B. develops; developed    
C. has developed; developing    
D. has developed; developed
题型:同步题难度:| 查看答案
Great changes_____ in his hometown since 1990.    [     ]
A. took place                
B. take place    
C. have taken place          
D. were taken place
题型:同步题难度:| 查看答案
—Kitty, will you go to see the film Iron ManⅡ this evening?    
—No,  I won"t. I          it already.      [     ]
A. saw                      
B. have seen      
C. see                        
D. will see
题型:同步题难度:| 查看答案
My parents             my new house already.    [     ]
A. decorated                  
B. are decorating    
C. have decorated              
D. were decorated
题型:同步题难度:| 查看答案
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