Using IM, you can send your friends a message that will appear on their screen for several minutes.
                    举一反三
- Did you send ________(贺卡) to your friends last Christmas?
 - If someone wants to talk with you while you are on a call, you can put the caller on holdfor several minutes.
 - Where and when does Paul appear on the screen? A: Your hobby could make you famous B: You should try to find a normal hobby. C: A hobby can be anything you enjoy doing.
 - Can you _____ your speech into five minutes?
 - If you are ______ busy to attend the meeting you can send your assistant to take your place.
 
