Hi. You did not submit the sample that the question refers to, nor did you submit your answer. This makes it impossible for this question to be answered. However, I will try to help you as best I can.
Your question asks you to compare your answer with a model answer. You don't show the context these two answers are related to, so you should look for that context in your paper. It is likely that these answers are related to the previous question.
To make the comparison you should note which elements these questions have similar or equal and how they complement each other. The more similar, the more complementary the two answers are. If the two answers do not complement each other, nor do they have any similar elements, it means that they are completely different.
 
        
                    
             
        
        
        
i saw ur question and just wanted to say good luck!
 
        
                    
             
        
        
        
C. Include their source in their bylines 
Have a great day!!!
        
             
        
        
        
Answer:
last summer; when school started;  after winter break; yesterday
Explanation:
last summer is the first because its comes before school started;  
and during the studies there are the winter break; 
yesterday is on the day preceding today.
 
        
                    
             
        
        
        
Answer:
Soon, soldiers and civilians began using the nickname Uncle Sam to refer to the United States.
Explanation:
Sentences 11 and 12 are both talking about "using the nickname Uncle Sam to refer to the United States".
In sentence 11, it talks about soldiers. In sentence 12, it talks about civilians.
You can say:
Soon, soldiers and civilians began using the nickname Uncle Sam to refer to the United States.