1 Is that a good idea? (ja)
Yes, it is.2 Do you need any help with that? (ja) Yes, I do.
3 Has she bought a house? (nee) No, she hasn’t.
4 Can I give you some advice? (nee) No, you can’t.
5 Are you from the Netherlands? (ja) Yes, I am.
6 Does he like music? (ja) Yes, he does.
7 Do you have a cat? (nee) No, I haven’t