1)sprained
2)sport coat
3)frilly
4)substitute
5)arena
6)gym
7)goofy
8)Dalmatians
9)champion
10)Promenade
Two sentences joined with a coordinating conjunction and a comma form a compound sentence. If it were a complex, it would have a dash. If it were a comma splice, it would have a dash and a dash. If it were a run-on, it wouldn't have either, just a lot of and in it.
Hope this helps. :D
Number two, it was a little hard to understand but i think i got what you were trying to say. B!
D. Teacher has underestimated the son.
The teacher has labeled the son as a "slow learner" and the father is arguing that that is not true.
