Поставьте предложения в отрицательную и вопросительную форму. 1. We have done business with this firm. 2. She has been

1. We have done business with this firm.Have we done business with this firm? We haven\'t done business with this firm. 2. She has been to the theatre this week. Has she been to the theatre this week? She hasn\'t been to the theatre this week. 3. They have come back today. Have they come back today? They haven\'t come back today. 4. She has phoned you this morning. Has she phoned you this morning? She hasn\'t phoned you this morning.5. They have had a good time. Have they had a good time? They haven\'t had a good time. 6. The film has been on since last week. Has the film been on since last week? The film hasn\'t been on since last week. 7. I have known him for ten years. Have I known him for ten years? I haven\'t known him for ten years. 8. They have lived in Moscow for a long time. Have they lived in Moscow for a long time? They haven\'t lived in Moscow for a long time. 9. We have received two letters from him since he went to London. Have we received two letters from him since he went to London? We haven\'t received two letters from him since he went to London.