感知以下课文原句，完成方框下的小题

◆语法感知

1.We ate great meals cooked by experts! 2.We saw abandoned farms which were built more than a hundred years ago. 3.For many years，trained camels carried food and other supplies，and returned with wool and other products. 4.Recently I had my first ride on a long-distance train. 5.One night，at about midnight，I watched the night sky for about an hour. 6.A long time ago，Australians needed a way to travel to the middle of the country. 7.The Afghans and their camels did this until the 1920s. 8.In 1925，they passed a law which allowed people to shoot the animals if they were a problem.