I think its misgiving because the other ones don’t really make sense.
An adverb can refer to objects of time. They are usually prepositions also.
1. Often
2. Very Fast
I: noun
run: verb
fast: adjective
The 1st sentence uses commas correctly
It's about how he learns how to play football because he thinks it would be cool because most of the kids weren't playing soccer they were play football
