1. These simulators have been developed for training pilots. [What…for?]
2. I check my email and voicemail every evening. [How often?]
3. We obtained false data because there had been a processing error. [Why?]
4. You can connect your computer to the Internet Service Provider with a modem and your home telephone line. [How?]
5. An error code will be displayed on the screen if any invalid information has been entered. [Where?]
6. The modem plugs into the USB port on your laptop. [What port?]
7. Work on the program debugging will be complete tomorrow. [When?]
8. Until recently, none of Clarks' designers had used the CAD system. [What system?]
9. An operating system called Linux became popular in the late 1980s. [When?]
10. The printer was not working because someone had disconnected it by mistake. [Why?]