zad.4
1. He has been online all morning.
2. He hasn't found a cheap computer.
3. His parents haven't had time to help him.
4. He has asked his friends to help him.
5. His friends have given him the address of a very good website for computers, but he has forgotten it!
zad.5
1. Have you saved your work?
Yes, I have.
2. Has Ana made any backups?
No, she hasn't.
3. Have you and your friend logged out?
Yes, we have.
4. Has Joe forgotten his password?
No, he hasn't.
5. Have the students done any researches?
Yes, they have.
6. Have you drunk any water?
No, I haven't.
zad.6
1. I can't log in because I have forgotten my password.
2. I'm looking for my computer but I haven't found it.
3. My friend has bought my brothers printer.
4. My sister has won the race.
