Ответ:

1.

1. Can journalists type their articles into a computer system?
2. Where can journalists type their articles?
3. Journalists can type their articles into a computer system, can't they?
4. Can journalists type their articles into a computer system or into a typewriter?
5. Who can type their articles into a computer system?

2.

1. Are daily papers brought at the door?
2. Where are daily papers brought?
3. Daily papers are brought at the door, aren't they?
4. Are daily papers brought at the door or at the mailbox?
5. What is brought at the door?