Answer:
Photograph of painting by Pablo Picasso titled Violin
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
Answer:
it was in the old centuries in 1400 centuries
Answer:
The answer is "both". Its a plural indefinite pronoun.