Correct sentence would be: I just found out that he was cheating on the test.
Hope this helps :)
Well a paragraph is a group of sentences that center around a topic or Central Idea So the answer would be B because if the story is about space and a there is a paragraph about horses that isn't a proper essay and you always need to stick with a central idea to get an A+
The main idea behind it is that life is short and that we need to laugh and be happy while we have time and not focus on negative things because life is short. If life hits you in the teeth there's no reason to be depressed forever about it, just laugh and be happy and keep moving on.