17．You stayed at your friends’ house when you participated in a business seminar in Australia．You left a file with important documents in your room．
Task：Write a letter to your friend, describing the file and ask him/her to return it to you by post．
18．You have recently made a purchase from the local department store．However, when you arrived home, you found a fault with it．Write a letter to the manager, say what the product is, explain the problem and say what you'd like to be done about it．
以上就是这30道2012年3月31日雅思G类小作文写作预测的全部内容，祝大家考试顺利！