用所给动词的正确形式填空
1. Be careful! the baby                      (sleep).
2. Our physics teacher said light           (travel) faster than sound.   
3. Mary           (go) to the zoo once a month.   
4. Jim                      (live) here for ten years.   
5. There                    (be)a football match next week.   
6. By the time we got to the station the train                   ( leave) .   
7. What        you           (do) at this time yesterday?   
8. I            already        ( finish) my homework, so I can play now.   
9. No one knows what                     (happen) in one hundred years.  
10. Many man-made satellites                                  . (send)  up into space so far.

—How nice your bike is! How long ____ you           it ？
—For two weeks.

—Can you give me some information about Paris?   
—Sorry, I ____ to Paris, So I know nothing about it.    

—Will you go to the cinema, Mary?     
—No, I'm afraid not. Because I              my ticket.     

There______ great changes in our country since 1979.      

My friend Li Xiao knows my hometown very well because he          there many times with me.    

—Hello ! Is that Mr Jiang?  
—No, he           Guiyang. He will be back in more than two weeks.

My life         a lot in the last few years. 

In the past few years there                great changes in my hometown.    

--Is your mother at home?          
--No. She_     shopping.