Ответ:

Subject PronounPositiveNegativeQuestion
II am reading.I am not reading.Am I reading?
heHe is singing.He is not singing.Is he singing?
youYou are playing.You are not playing.Are you playing?
weWe are going.We are not going.Are we going?
sheShe is swimming.She is not swimming.Is she swimming?

Present Continuous образуется с помощью am/is/are и смыслового глагола с окончанием -ing.