Задайте общий вопрос к предложеничм: 1.this is our friend. 2.he is from europe. 3.this name is bob. 4.they are good in mathematics. 5.everything is all right. 6.we are happy together. 7.she is responsible for all her debts. 8.you are successful in business

1 Is this our friend?
2 Is he from Europe?
3 Is this name Bob?
4 Are they good at mathematics?
5 Is everything all right?
6 Are we happy together?
7 Is she responsible for all her debts?
8 Are you successful in business?