No.
if the sentence was the other way around, you would need a comma. ie: Because she studied really hard, Shauna got an A in her chemistry test.
1-i will go to school.
2-we will work very hard.
3-they will be happy.
4-it will be alright.
5-you will come with me.
6-they will surprise me.
7-we will be happy.
8-i will play soccer.
9-it will be fun.
10-he will smile.
Explanation:
the author needs to get the best information about the hero to explain something about him