Ex.3
1. We need someone to...
2. Someone has to...
3. Could you be responsible for ... -ing?
4. Would you mind ... -ing?
5. How would you feel about ... -ing?
6. I'd be happy to...
7. I'll ... if you like.
8. I don't mind ... -ing.
9. That isn't the sort of thing I'm good at, I'm afraid.
