A. take      
B. taking    
C. to take    
D. takes

A. to read    
B. read            
C. reading        
D. reads

A. speaking        
B. speak        
C. speaks      
D. to speak

A. to listen        
B. listens          
C. listen      
D. listening

A. working     
B. to work        
C. work      
D. works

A. watching    
B. to watch        
C. watches      
D. watched

A. see        
B. seeing        
C. to see      
D. sees

1. The            (busy) we keep, the             (happy) we feel.
2. We should try            (study) hard for the future.
3. Would you mind my            (move) the desk?
4. At the            (begin) of the lesson, the teacher asked us some questions.
5. I can't stand the baby            (cry).

A. stay, going  
B. staying, go  
C. staying, going  
D. to stay, go

A. to see          
B. see
C. seeing
D. saw