Check ( ) the statements that are true according to the reading passage.
……..1. The “You’ve got mail” sound in your computer is useful.
……...2. It is not efficient to check your e-mail every time you get a new message.
…….. 3. You should check your e-mail at the same time every day.
…….. 4. Most workers should have only one e-mail account.
…….. 5. You should answer all of your e-mail messages right away.