1. Jack, one of my buddies, kept ________ (nod) his head as if he completely understood what I said.
2. Years ago we didn't know this, but recent science _________ (show)that people who don't sleep well will soon get ill.
3. He with his friends ________ (lie) in the sun and feeling relaxed on the Long Beach when his new boss called him.
4. We first met on a train in 2000. We both felt immediately that we ______ (know)each other for years.
5. Listen to the speaker carefully, or you __________ (miss) something important .
6. - The food here is nice enough.  
    - Yes,my friend ____________ (introduce) me a right place.
7. Jack told me that they ________ (return)to the USA from Shanghai by the end of next November.
8. To prevent the things getting worse, action should ___________ (take) at once.

A. see        
B. listen        
C. seeing      
D. listening

A. to get                  
B. getting                      
C. get                      
D. geting

A. chatting
B. chat
C. chatting with
D. chat with

A. swimming, swimming      
B. swim, to swim  
C. swimming, to swim        
D. swim, swimming

A. educate        
B. to educate      
C. to educating      
D. to education

A. come    
B. comes      
C. coming    
D. came

A. learn; learn about          
B. learning; learn about
C. to learn;  tell about        
D. learning; tell about

A. go      
B. goes      
C. going      
D. doesn't

1.He had to work on the farm to make a l_________．  
2. She got a c_________ to go to Fudan University.  
3. We should take the i_________ soldier to hospital at once.