假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处，每处错误仅涉及一个单词的增加、删除或修改。
增加：把缺词处加个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Tom had a interesting dream last night. In the dream he took part in a race. At first, he could not run very fast and fell behind. So he didn’t lose heart and keep running. All the students on the playground began to cheer him on, “Come on! Come on!” He was so great encouraged that he ran faster and fast till he caught up with all the other runners. Finally, he got the finishing line first and won the race. Many of his classmate gathered around and congratulated him for his success. They even threw her up into the air…. Just at that time he woke up and found himself was still in bed!a--an
网友回答
(答案→)a--an
解析：考查学生对冠词、时态、副词、比较级、介词、人称代词等基础知识的掌握情况。
【小题1】考查冠词。首字母发音是元音的词，前面用不定冠词an，故把a改为an。
【小题2】考查连词。fell behind和he didn’t lose heart是转折关系，故把So改为But。
【小题3】考查时态。根据last night可知，应该用一般过去时，故把keep改为kept。
【小题4】考查副词。修饰动词encouraged应该使用副词，故把great改为greatly。
【小题5】考查比较级的用法。比较级+and+比较级，意为“越来越......”，故把fast改为faster。
【小题6】考查固定短语。get to sp到达某地，get不及物，后跟名词作宾语时，要带上介词to，故在got后加to。
【小题7】考查名词。many of+可数名词复数，故把classmate改为classmates。
【小题8】考查固定搭配。congratulate sb on sth祝贺某人某事，故把for改为on。
【小题9】考查人称代词。Tom是一个男孩，故把her改为him。
【小题10】考查find的用法。find sb+形容词/介词短语/doing等作宾补，意为“发现某人......”，如果看成found后跟上来that的宾语从句，从句缺少主语he。故把was去掉。