Задать разделительный вопрос. 1.they are going to play the drums. 2She is an American. 3There is difference in the customs

1.They are going to play the drums, aren\'t they? Они собираются играть на барабанах, не так ли?

2. She is an American, isn\'t she? Она американка, не так ли?

3. There is difference in the customs of different people, isn\'t there?  Существует разница в обычаях разных людей, не так ли?