Answer:
The answer to the first question is A. The woman who is crossing the street is my ex-wife.
The answer to the second question is B. The interjection needs an exclamation point.
The answer to the third question is C. Hilarious.
The answer to the fourth question is A. Once presented, the content may be available to anyone.
Explanation:
for the first answer : Whom should be used to refer to the object of a verb or preposition. When in doubt, try this simple trick; if you can replace the word with "he" or "she," use who. If you can replace it with "him" or "her," use whom. Who should be used to refer to the subject of a sentence.
for the second answer: Many interjections need an exclamation point because it is used to express joy, surprise, worry, and shock.
For example:
"that's amazing!"
"help!"
"shut up!"
"stop!" and "Stop! The glass is about to break above the kids' heads."
for the third answer: Hilarious means extremely amusing and causing a lot of laughter. for example: "Her jokes are absolutely hilarious."
for the fourth answer: Once you present on the stage, your content should be available for your audience to see and take reference from.