Поставьте следующие предложения в отрицательную и вопросительную формы.
1. They are discussing their performance.
2. I’m going to have a test in English.
3. I play the piano perfectly.
4. Sometimes we had music lessons in a great hall.
5. We had lunch at work.

1. They are not discussing their performance.Are they discussing their performance? 2. I am not going to have a test in English.Are you going to have a test in English? 3. I play the piano perfectly.I don't play the piano perfectly. Do you play the piano perfectly? 4. Sometimes we didn't have music lessons in a great hall.Did you sometimes have music lessons in a great hall? 5. We didn't have lunch at work.Did you have lunch at work?