假如你是李华，你的美国笔友David想了解你的寒假计划，请根据以下内容提示问题，用英文从提高学习、参与志愿活动、如何开拓视野等方面介绍自己的寒假安排，给他写一封email。内容提示问题：
What will you do to improve your study?
Why do you plan to do volunteer work?
How can you open your eyes?
Something more about your winter vacation.
…
注意：文中不得透露个人真实信息；词数60—80；标题和开头已给出，不计入总词数。
Dear David.
How time flies! Winter vacation is around the corner.
……
What about you ? Looking forward to your reply.
