To express each and every things in better way regarding the diagram 
 
        
                    
             
        
        
        
Answer:where is the lines show the lines and I will answer it
Explanation:
 
        
             
        
        
        
Answer: As I walked down the hallway, all the lockers were open.
Explanation:
This sentence incorrectly suggests that the locker were walking down the halllway. To modify this, we need to add a subject.
 
        
             
        
        
        
People need to be happy with what they have.
 
        
             
        
        
        
Answer:
D. Before he went to sleep he completed his homework.
Explanation:
A dependent clause is a clause that has a subject and a verb, but doesn't make sense on it's own. The dependent clause is"Before he went to sleep", because he is the subject, and sleep is the verb, but doesn't make sense on it's own.