It depends on if you argue for or against it. For a thesis to being with community service maybe try something like:
Community service is something that can be very effective on our environment. The possibilities of a clean world can be achieved if more people were to band together and tackle issues such as littering and pollution. However, it seems that right now, many people are not so much for the cause or the effort in saving our planet.
Exciting is like when your happy about something.Frightening is like when you get scared of thunder and. Sutisfying is like when your explaning.
D, because after you said though, yu have to complete your comparison
B I think hope this helps