Réponse :
1. He hasn't done the shopping yet.
2. He hasn't paid Mark back yet.
3. He hasn't bought paper for the printer yet.
4. He hasn't checked his emails yet.
5. He hasn't asked his dad for some money yet.
6. He has already written to Daniel.
7. He hasn't finished writing his project yet.
8. He hasn't cleaned the fiat yet.
9. He hasn't taken out rubbish yet.
10. He hasn't got a haircut yet.
Explications :
"yet" s'utilise généralement en fin de phrase, c'est possible de l'utiliser ailleurs mais c'est plus formel.
Already peut s'utiliser en fin de phrase également donc "he has already written to daniel." peut aussi être "he has written to Daniel already", les deux sont corrects mais la réponse que j'ai marqué est un peu plus formel.
Voilà, j'espère que ça a pu aider.