1. I'm doing morning exercises. I'm not doing morning exercises. - отрицательное предложение. Am I doing morning exercises? - вопросительное предложение. 2. He works at a factory. He doesn't work at a factory. - отрицательное предложение. Does he work at a factory? - вопросительное предложение. 3. She sleeps after dinner. She doesn't sleep after dinner. - отрицательное предложение. Does she sleep after dinner? - вопросительное предложение.