1. Are there four girls there?
Yes, there are.
2. Are they going to ski?
Yes, they are
3. Does it often rain...?
Yes, it does
4. Is he her uncle?
Yes, he is
5. Does he have ...? (я не уверена)
Yes, he does
6. Shall I swim...
Yes, I shall
7. Did she meet....?
Yes, she did.
8. Does she met...?
Yes, she does