Hello，I'm Li hua，chairman of Student Union．We're going to organize a bicycle trip to our school farm on this Sunday．It was located in the western suburb，covered an area of about 50acres．There are different kinds of cattle raised and various vegetable planted，without some harmful things in the feed or the fertilizer．The products are provided for the school canteen，which we enjoy a health diet．On the farm you can combine∧you have learned with practice to the fullest．

　　You are expected to arrive there at about 9o'clock，Remember：following the workers and don't try to do anything strange to interest the animals or do damage to the plants during my visit．

　　详

　　1．去掉on 考查介词．thisSunday"这个星期天"，直接可以作时间状语，不需要再加介词．

　　2．was改为is 考查时态．此处描述的是客观事实，应使用一般现在时．

　　3．covered改为covering 考查现在分词．it与cover之间是主谓关系，用现在分词作状语．

　　4．vegetable改为vegetables 考查名词复数．根据修饰词various"各种各样的"可知，此处应使用vegetable的复数形式．

　　5．some改为any考查形容词．此处指"没有任何的有害物质"，any用于表示否定意思的句子中，some用于表示肯定意思的句子中．此处表示否定意思，用any．

　　6．which改为where或which前加in 考查定语从句．分析句子结构可知这是一个定语从句，先行词theschoolcanteen在从句中作地点状语，用关系副词where．引导定语从句时inwhich=where．

　　7．health改为healthy考查形容词．此处修饰diet，意为"健康的饮食"，应使用形容词．

　　8．加 what/all 考查宾语从句和定语从句的省略．根据句意：在农村里，你能将所学到的东西与实践充分地结合起来．combine后添加what则为宾语从句，what作learn的宾语；如果填写all则为allthat的省略，all为先行词，that在定语从句中作宾语时，可以省略掉．

　　9．following改为follow 考查祈使句．分析句子结构可知，此处为祈使句与后面的anddon'ttry及ordodamage动词形式保存一致．

　　10．my改为your考查代词．根据句意：在你的参观期间．用代词your．