You work for a foreign company. Now you want to ask for a short period of leave. Write an email to your boss Mr. Smith to tell him:
     1) why you want to ask for leave;
     2) how long you want to be away;
     3) what you plan to do about your current work.
     You should write about 100 words. Do not sign your own name at the end of your email. Use “Wang Lin” instead.