有老师批改：作文句子找错Last week,our class had a discussion about if we should extra class.（if）

There were 15 students who said they agreed with it,because it's helpful for students‘ to study.There were also 25 students who said theydisagreed with it One more thing,some students are not caref...括号里面的有些还没改掉啊 还有标题上的一句括号里的是什么意思？就是错的部分呀！老师圈出来的There were15students said they agreed with it，because it was helpful for students‘ study.（there were，it's）There were also 25 students said they were disagreed with it.（there were also，they were）One more，some students were not careful enough in class.（one more）In my opion，we could extra class for students who were interested in it.That could obey every students’ thought.（could和extra中间，obeyevery students’ thought）这篇改错题不太明确，我把所有的现在时改成了过去式。