so tired

I've been so tired for these days . Because I am teaching two graduating classes. To get a good result ,to make the leaders satisfied , I am working hard. Sometimes I have been teaching from 7:am to 11:40 am and after lunch I must direct the students who have difficulties in learning, I must make them get a score of 60 at least in the final exam.But some students have no interest in English. No matter what methods you use ,they can hardly make any progress .I wish I weren't an English teacher .I prefer to teach any of the so-called small subiects. As an English teacher in Dalian , I feel so tired and be under a lot of pressure. If you are an English teacher ,don't come to Dalian to teach.