I’m guessing it wants you to fill in two major key signatures like D major and C major also with two minor key signatures like A minor and B minor. I picked those key signatures because A minor is the same as C major but it starts on A and D major and B minor is the same but it starts on B
        
             
        
        
        
Pretty sure it is B. 600 A.D
        
             
        
        
        
Answer:
Essentially, the word “blackberry” (as you might guess) came from our ancestors looking at a berry-like fruit that was black, and deciding on a simple name for it. The word “black” comes from the Old Norse word for the color, which was “blakkr.” This developed into “blaec” in Old English.
 
        
                    
             
        
        
        
Quick, high-tempo, forte, staccato, squeaking, high-pitched, pulsing, etc.