【单选题】If you have any complaints about our policy, please _____________ us in writing. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【简答题】Notes: 1. The following is the exercise we did in class, and you may check your answes on your own. 2. As for this assignment, you may respond with either your questions or whatever you think about "s...