Ответ:

1)
(-) Gina hasn't got a nice dress for party?
(?) Has Gina got a nice dress for party?

2)
(-) You haven't got two brother.
(?) Have you got two brother.

3)
(-) Pete and Tom haven't got a new car.
(?) Have Pete and Tom got a new car.

4)
(-) We haven't got an English test today.
(?) Have we got an English test today.

5)
(-) I haven't got a problem with my computer.
(?) Have I got a problem with my computer.

6)
(-) Grant hasn't got a black jacket.
(?) Has Grant got a black jacket.

7)
(-) Ian's sister hasn't got long hair.
(?) Has Ian's sister got long hair.

Если помог, оцени решение, как "лучший ответ". Удачи в учёбе!