Вставите слова (вариантов ответов нет) 1)since 1987the children have given veterans gifts and flowers. the children for 2)the children have helped to clean the lakes for eight years. .

1)Since 1987 the children have given veterans gifts and flowers. The children THANK THEM for THE VICTORY. 
2)The children have helped to clean the lakes for eight years. THE LAKES HAVE BEEN CLEAN since THEN.