By the way, my tutor at ABC Tianben English Center just told me that it is easy to conquer English ... it needs a suitable learning environment, and the level of foreign teachers practicing oral English is very important. Pure European and American accent (non-Southeast Asia) is the best way to persist in daily oral English learning, and targeted teaching on 1 will have the best learning effect ~ Remember to play back the recording and audio of the review lesson after class to deepen your impression! But there is really nothing to practice, so go to VOA or AISI to get after-school materials to study. Talk more, practice more, ask more, listen more and read more, and you will make progress unconsciously. A lot of learning and growth should be rapid and obvious! Dear Mr. xxx, I'm sorry to reply so late. I have read the information provided by your company. My partner and I are very interested in your products, and we may plan to go to your company for further discussion. However, we have a problem. My partner needs an invitation letter from your company to apply for an S visa. I would appreciate it if you would take the trouble to send us an invitation letter. We will go to your company immediately after receiving the visa confirmation. The estimated time should take about a month. If this is not a problem, I really look forward to our future cooperation. I really appreciate your help. Thank you. Your name is attached: please let me know. Your fax number so that I can provide the particles. I hope I can help you ~ work smoothly.