Both his parents look sad.  Maybe they       _   what"s happened to him.        

Both his parents look sad.  Maybe they       _   what"s happened to him.        

题型:同步题难度:来源:
Both his parents look sad.  Maybe they       _   what"s happened to him.             [     ]
A. knew          
B. had known      
C. have known  
D. will know
答案
B
举一反三
By the time he showed up, we _     _ twenty trees.          [     ]
A. has planted  
B. have planted    
C. had planted    
D. were planting
题型:同步题难度:| 查看答案
句型转换。1. Jack has gone to school .(用by the time 改写句子)
   Jack________  ________  to school by the time I called him.
2. The story was very interesting. I could never forget it .   (合并为一句)
   The story was________ ________ ________ I could never forget it.
3. I was late for school because my alarm clock didn"t go off. (就画线部分提问)
    ________ ________ you late for school?
4. I wonder if he can marry me. (改为同义句)
   I ________ ________ ________if he can get________ ________ me.
5. He always be careful so that he will not make mistakes. (改为同义句)
    He always be careful ________ ________ ________  to make mistakes.
6. Could I borrow your bike? (改为同义句)
    Could you________ your bike________ me?
7. When I got up, my father had gone into the bathroom.  (改为同义句)
    ________ ________ ________ I got up, my father had gone into the bathroom.
8. The little boy is very polite. (改为同义句)
   The little boy has________ ________.
9. Something was wrong with my car on my way home yesterday.  (改为同义句)
    My car ________ ________on my way home yesterday.
10. My French has improved quickly. (改为感叹句)
    ________ ________ my French has improved!
题型:同步题难度:| 查看答案
—Did you see Mary at the party?
—No, she _____ by the time I got there.      [     ]
A.  would leave  
B.  has left          
C.  had left          
D.  was leaving
题型:同步题难度:| 查看答案
Where I got to the cinema, the film _____ for fifteen minutes.[     ]
A. had begun  
B. has begun  
C. has been on
D. had been on
题型:同步题难度:| 查看答案
By the time I got home, my son _______ his homework already.          [     ]
A. finished                            
B. have finished          
C. had finished                        
D. will finish
题型:期末题难度:| 查看答案
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