Поставьте предложение в вопросительную и отрицательную форму
1. My sister is playing the piano now. 2. The teacher is explaining the rule. 3. We are learning the new words. 4. Ann is standing at the window. 5. We are going to the park 6. John is taking a piece of chalk and writing a sentence on the blackboard. 7. I am doing my homework. 8. Jane is speaking on the telephone. 9. She is cooking supper.

Negatives1. My sister isn't playing the piano now.2. The teacher isn't explaining the rule.3. We aren't learning the new words.4. Ann isn't standing at the window.5. We aren't going to the park.6. John isn't taking a piece of chalk and isn't writing a sentence on the blackboard.7. I'm not doing my homework.8. Jane isn't speaking on the telephone.9. She isnt cooking supper.Questions1. Is my sister playing the piano now?2. Is the teacher explaining the rule?3. Are we learning the new words?4. Is Ann standing at the window?5. Are we going to the park?6. Is John taking a piece of chalk and writing a sentence on the blackboard?7. Am I doing my homework?8. Is Jane speaking on the telephone?9. Is she cooking supper?