Reality shows are good because they show reality as it is. The passage states "Reality shows, as the name implies, reflect "reality" without any preconceptions or judgments." It also states "In old TV shows, the good guys always win...But reality is not like that-and thus reality shows aren't either." These both show that reality shows reflect real life.
Hey there! The present tense would be swim. This is because it suggests your swimming in the present, instead of swum or swam, which suggests that you did these 50 laps in the past. Hope this helps!
