как сделать упр 5 по английскому

2. The US president isn't English (не уверен).
3. Moscow is not a Germany. It is a Russia
4. Five and six is not a twelve. It is 11
5. You're not English. You're Russian.
6. We're not in a Russian class. We're in a English class.
7. Rolls-Royce cars aren't American.(Вот здесь я не знаю)
Вроде так. Извини, если где-то ошибся