A research paper is fact and nothing but the fact. A research paper is just giving information about a topic. However, rhetorical questions are used to persuade the reader to believe or agree with something, mainly in a discursive essay; but in a research paper, you aren't persuading, you are educating.
        
                    
             
        
        
        
(Kevin and Denise thinks) is incorrect.  The correct pronunciation would be (Kevin and Denise <u>think) </u>without the plural form.
 
        
             
        
        
        
Answer:
sophiya does not sing really well.
Explanation:
 
        
             
        
        
        
Answer:
It is called a noun clause 
Explanation:
A clause that may be used as a subject complement is called a noun clause.