Today’s class are mandatory for some students. 
Excuse me, can you move a little bit?
I can’t belive that situation happens to me. = I can’t believe that situation happened to me.
I rarely eat octopus which is very flavorful. 
There are many people who have a variety (This sentence is incomplete; please clarify what kind of variety you mean, e.g., "a variety of skills" or "a variety of interests.")

Great Job!