Вставим подходящую форму глагола to be (was, wasn't, were, weren't):
George: The hotel was old.
Jan: No, it 1) wasn't. It 2) was new.
George: The rooms were small.
Jan: No, they 3) weren't. They 4) were really big!
George: The owner was Australian.
Jan: No, he 5) wasn't. He 6) was American!
George: The food was bad.
Jan: No, it 7) wasn't. It 8) was great!
George: The weather was cold.
Jan: No, it 9) wasn't. It 10) was really hot!