What are the challenges percy jackson faced in chapter 2

Make sure the topic of your persuasive essay is not a.something someone else is writing about b.a fact c.something you have written about before

Acomplex sentence contains . one subject and one verb

Idon't know which one from these two forms is correct! "he believed that the technology of the future would allow robots to do the same tasks as a human." or "he believed that the technology of the future would have allowed robots to do the same tasks as a human. , it's ! i need your !