rewrite these sentences in an academic manner 1. Whenever I'd visited there before, I'd ended up feeling that it would be futile if I tried to do anything more. 2.The cities in Switzerland had once been peaceful, but they changed when people became violent. 3.Because the technology has improved its less risky than it used to be when you install them at the same time, and it doesn't cost so much either. 4.The people in the colony rejoiced when it was promised that things would change in this way.