Хорошо, давай посмотрим на задание. Нам нужно превратить каждое утвердительное предложение в отрицательное и задать по нему общий вопрос. Для отрицательной формы в английском языке мы используем вспомогательный глагол "do" с частицей "not" (в сокращенном виде - "don't" или "doesn't", в зависимости от подлежащего), а в вопросах - тот же глагол без частицы "not". Итак, давай приступим:
Alisa and Dima are cooking dinner now. Отрицание: Alisa and Dima are not cooking dinner now. Вопрос: Are Alisa and Dima cooking dinner now?
She is swimming in the river at the moment. Отрицание: She is not swimming in the river at the moment. Вопрос: Is she swimming in the river at the moment?
I am taking a shower now. Отрицание: I am not taking a shower now. Вопрос: Am I taking a shower now?
Lisa is dancing with Michael right now. Отрицание: Lisa is not dancing with Michael right now. Вопрос: Is Lisa dancing with Michael right now?
The gardener is cutting the grass. Отрицание: The gardener is not cutting the grass. Вопрос: Is the gardener cutting the grass?
Petya is writing an email now. Отрицание: Petya is not writing an email now. Вопрос: Is Petya writing an email now?
The children are riding their bikes at the moment. Отрицание: The children are not riding their bikes at the moment. Вопрос: Are the children riding their bikes at the moment?
My brother is taking pictures now. Отрицание: My brother is not taking pictures now. Вопрос: Is my brother taking pictures now?
I am saving money for a new laptop these days. Отрицание: I am not saving money for