Answer:
The class had studied the planets before the solar system
Explanation:
 
        
             
        
        
        
I believe "You will eat lunch / at school / with friends" most clearly develops an argumentative tone because of the 'will'. Sounds like someone's trying to force the person to do that and the person may try to argue back because the will makes it sound like they have no choice in the matter. 
 
        
             
        
        
        
JROTC is different today from 100 years ago since it does not exist 100 years ago. The Junior Reserve Officer Training Corps (JROTC) is a Federal program sponsored by the United States Armed Forces in high schools and also in some middle schools across the United States. 
        
             
        
        
        
Answer:
The line King refer to where he is giving the speech is explained below in details.
Explanation:
In the remarkable speech delivered on August 28, 1963, Martin Luther King, Jr. addresses the prominent American. He is speaking about Abraham Lincoln. He mentions in his conversation to the evidence that Lincoln was the one who had approved the Emancipation Proclamation, emancipating slaves.
 
        
             
        
        
        
B, because the period is ALWAYS outside of the parentheses, and there is no comma.