Rewrite the sentences using perfect participles or perfect gerunds: 1.Since he had spent his childhood in Manchester, he knew the city well. =>............................................................................ 2.Denis had taken an active part in the Green Summer activities.He was rewarded for that. =>............................................................................ 3.He had dumped lots of rubbish onto the beach.He denied it. =>............................................................................ 4.You had saved the lives of hundreds of wild animals.Thank you for that. =>............................................................................ II.Rewrite the sentences, using the prensent perfect or the prensent perfect continuous. 1.She started writing this essay hours ago.She hasn't finished it yet(for). =>............................................................................ 2.The last time I saw Nick was in 1995.(sinces) =>............................................................................ 3.Eating Chinese food is new to her.(never) =>............................................................................