Mask? if not so, it must be to brim.
I tried my best, i'm extremely sorry if the answer is incorrect
You have to consider yoir audience in order to decide wht type of writing you're going to do, possibly what arguments to make, and what style you write your piece in. who you are writing for really makes your writing what it is.
The last one. The only scenario where you wouldn't put a comma in the first quote is if it's a completed remark that uses particular punctuation such as a quotation or exclamation mark, but never a period. Hope this helped.
Answer:
I get the impression that even though they were tough they were not tough enough to survive what killed them.
Explanation:
Hope this helps.