假设你是Bob,在英语老师Mr Feng 的帮助下你的英语有很大进步.请你结合以下提示,给Mr Feng 写一封信,表达对老师的感谢和祝福.词数80左右.

Mr. Fengi m writing to express my sincere gratitude to your help during these days !i was really frustrated about my english,it seemed so difficult to me, especially my Reading test.that is a very big...