把下列句子改寫為復(fù)數(shù)句子。
l. This is a photo.
                                                        
2. He is a boy.
                                                    
3. That is his brother.
                                                   
4. It's a notebook.
                                                  
5. I am English.
                                                      
1. These are photos.
2. They are boys.
3. Those are their brothers.
4. They're notebooks.
5. We are English.
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