A. helped
B.will help
C.am helping
D.was helping

1. Jack told Tom that he ______ (prepare) for the exam those days.      
2. It's important ______ (learn) English well.      
3. Both of the sweaters are nice. I can't decide which one (choose) ______.     
4. I think she's good at ______ (skate) and she's an excellent skater.      
5. We try not ______ (be) late for work, but sometimes the traffic is really heavy.     
6. If you don't show your ticket , I ______ (not let) you get into the cinema.     
7. They are______ (talk) about the football match on the phone.    
8. He isn't good at ______ (study) English. He needs a teacher to teach him at home.      
9. I saw them ______ (swim) in the river when I walked there. 
10. They______ (watch) the World Cup when I arrived there. 

A. has worked                    
B. had worked      
C. was working                  
D. had been working

[      ]

A. works
B. worked
C. was working
D. is working

1. Mr. Wang got out of the library.(改写成过去进行时的句子)
   Mr. Wang ________ ________ out of the library at that time.
2. There were many people in the train station last Sunday.(改为同义句)
    The train station ________ ________ last Sunday.
3. When they got to the airport, the plane began to fly.(改为同义句)
    When they got to the airport, the plane began to________ ________.
4. We were riding to school at seven thirty that day.(对画线部分提问)
    ________ _________ you ________ at seven thirty that day?
5. The boy mended the bike as his father did.(改为同义句)
    The boy ________ his father ________ ________ the bike.

A. is cooking
B. cooks
C. will cook
D. was cooking

A. had
B. was having
C. am having

A. is cooking
B. cooked
C. was cooking
D. would cook

A. is shaking    
B. was shaking    
C. was moving    
D. is keeping

A. had;with
B. were having;for
C. are having;for
D. had;for