Look, this ____ my shirt and these ____ my shoes.        
[     ]
A. are; is                
B. have; are                
C. is; are
There_________ two lights and a blackboard in our classroom.        
[     ]
A. are
B. is  
C. isn't
-What are you doing?
-We _____ doing homework.              
[     ]
A. is                            
B. are
My grandparents ____ going shopping.            
[     ]
A. is                        
B. are                        
C. am
What ____ you doing?        
[     ]
A. is                  
B. am                  
C. are
____ he playing chess?             
[     ]
A. Is                  
B. Are                
C. Am
What ____ the dog doing?           
[     ]
A. is                      
B. am                    
C. are
Read and write. (根据主语人称用be动词的正确形式填空)
1. What ______ you doing? I ______ sleeping.
2. Where _______ they?
3. I ______ fine. Thank you.
4. Mom, there ______ a call for you.
5. The snow _______ falling. Winter ______ here.
My parents _________ reading the newspaper. 
[     ]
A. are  
B. am  
C. is
The ducks _______ swimming in the river.
[     ]
A. am
B. is
C. are
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