1. That is my good pen friend. (改为复数句子)
    _____ _____ our good pen _____.
2. This is her family photo. (变为一般疑问句)
    _____ _____ her _____ photo?
3. Tom is Mr Green's son. (改为同义句)
    Mr Green is _____ _____.
4. Those are my friends. (对划线部分提问)
    _____ _____ those?
5. They are orange backpacks. (改为单数句子)
    _____ _____ orange backpack.

1. This is my friend. （变为复数句）    
________________________  
2. Is that your baseball? （变为复数句）   
________________________  
3. These computer are new. （变为单数句）    
________________________  
4. Are those dictionaries here? （变为单数句）    
________________________  
5. It’s my backpack. （变为复数句）    
________________________  
6. These are his grandparents.（变为一般疑问句）    
________________________  
7. Those are photos. （就画线部分提问）    
________________________  
8. Are these school things? （作否定回答）    
________________________  
9. The woman teacher is at school. （变为复数句）    
________________________  
10. This is a girl student.（变为复数句）    
________________________