We finished the run in less than half the time  ________ . 
[     ]
A. allowing  
B. to allow      
C. allowed        
D. allows
Throughout history, the language________ by a powerful    group spreads across a civilization.        
[     ]

A. speaking                        
B. spoken    
C. to speak                        
D. to be spoken

12_________ 5 makes 7.    
[     ]
A. taking away                    
B. taken away    
C. to be taken away              
D. to take away
__________for over 3 months, the poor boy was still unconscious.    
[     ]
A. Having treated                
B. Treated    
C. Having cured                  
D. Cured
The subject isn't very________well in the book.    
[     ]
A. dealing with                  
B. dealt with    
C. put with                          
D. putting with
The children went home from the grammar school, their lessons________ for the day.                    
[     ]
A. finishing                          
B. finished
C. had finished                      
D. were finished
_________not to miss the flight at 15:20, the manager set out for the airport in a hurry.           
[     ]
A. Reminding                    
B. Reminded      
C. To remind                      
D. Having reminded
__________ from the moon, the earth looks like a colorful ball.    
[     ]
A. Seeing                          
B. Seen    
C. Having seen                
D. Having been seen
Only __________according to the directions can the medicine be quite effective.    
[     ]
A. taking                        
B. taken    
C. being tak'en                  
D. having been taken
__________time,he'll make a first-class tennis player.    
[     ]
A. Give                              
B. To be given    
C. Given                            
D. Giving
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