'Finally' is the answer the others don't make sense if you try to read them with the rest of the sentence.
Answer:
1. never snows
2. worked
Explanation:
1. It never snows like that.
2. She worked here for five years
To snow.
Why? "It's beginning to snow." makes the most sense. "It's beginning snowing." doesn't make as much sense.
Answer:
A
Explanation:
It is giving you the way to be able to identify the said bird, by taking note of it's features, calls, size and more. By taking notes, it allows you to be able to study the bird later on after the bird is long gone.