Answer:
The fill in the blank section:
3/4 and 4/4
The section beneath:
1) Add one more note to the first measure and second measure
2) Add two more notes to the first and second measure.
Sorry if this is wrong, I haven't been in choir for a little while and I may not remember things correctly.
Mickey Mouse's dogs name is Pluto.
False, Dark Rooms have plenty of hazards and need a trained individual to use them correctly and safely.
I think B but not for sure
The key signature allows the composer to use less accidentals which makes the music less cluttered. Just like the other person who answered this said when a score with multiple instruments is written it is almost always all in the same key to keep the music organized (their answer is better)