1. —Why are you late again?
    —Sorry, I o ______ this morning.    
2. By the time they got to the cinema, the film             ______ ( begin).
3. By the time I called him, he              ______ ( fall)asleep.
4. When she reached the shop, she suddenly remembered she               ______(leave) her purse at
home.
5. When I ______ ( get) to school, I realized I              ______(leave) my backpack at home.

A. began; got        
B. had begun; had got
C. began; had got    
D. had begun; got

A. have fled          
B. had fled
C. fled                
D. had fleed

A. has caught        
B. had caught
C. has had            
D. had had

A. had kept                
B. has kept
C. had borrowed            
D. has borrowed

A. has finished      
B. had finished  
C. have finished      
D. finish

1. By the time I      __ (wake) up,  it already                     (stop) snowing.
2. He said he                    (see) the movie twice.
3. By the end of last term, we                       (learn) 400 English words.
4. When I         (get) to the cinema, the film                      (start).
5. He                      (finish) his homework by nine o'clock 1ast night.
6. We                      (wait) for her for twenty minutes by the time Sally          (arrive)
7. They said they                       (be) to Hong Kong.
8. They                       (come) to her home before she           (telephone) them.
9. The school bus                        (leave) when I           (get) outside.
10. After I got off the bus, I found I                         (lose) my wallet.

A. begin          
B. began          
C. had begun      
D. has begun

A. locked          
B. was locked      
C. has locked      
D. had locked

A. have not seen  
B. saw          
C. didn't see      
D. hadn't seen