Practice 6　　● Read this part of a letter your boss has received from Mrs. Collins, a conference organizer.　　I am writing to ask if you would like to attend a seminar on 17 March and give a speech on business issues.　　Accommodations and the use of a car will be provided.　　If you could come, please confirm the subject of your speech and the standard of accommodations you would need.　　I look forward to hearing from you.　　● Your boss has asked you to reply to the letter, accepting the invitation.　　● Accepting the invitation;　　● Giving out the subject of your boss’s speech;　　● Explaining why your boss is interested in this subject;　　● Reserving a hotel room.　　● Write about 60-80 words.