Задать общи вопрос к предложениям с глаголом to be 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 your friend? 2 is he from Europe? 3 is this name bob? 4 is everything all right? 5 are we/you happy together? 6 is she responsible for all her debts? 7 are you successful in business?