Directions: For this part, you are allowed 30 minutes to write a letter. Suppose you are Li Ming. Write a letter to Martha, a teacher of yours in the senior high school. You should write at least 150 words following the outlines given below:
1. 得知老师要来伦敦访问非常高兴；
2．介绍自己的学习和生活；
3．希望能带老师参观伦敦。