1. You must list all of your information sources at the end of the essay.
2. I could not open a program by selecting an icon and double-clicking it.
3. The Internet café is a place with computers where customers can use the Internet and buy drinks and food.
4. I consider that we must repeat the experiment again using a different method.
5. You may select programs, which you want to watch, and program your VCR to record them.
6. A primitive man knew only ten number-sounds and could count in the way a small child counts today, one by one, with the help of his fingers.
7. Before installing the program, users must positively answer several questions.
8. A computer virus can infect your files and corrupt your hard disk.
9. If you must do a lot of things, make a list and arrange them in order of importance.
10. You should make a copy of the disk as a backup.
11. You may delete any files that end in ".tmp".
12. PIM (personal information manager) is a computer program in which you write names, addresses, things that you must do, etc.