Vasconcelos, organize melhor sua pergunta. Look:
am / is / are + verb -ing - present continuous; questions: inverta sujeito e verbo; negative: coloque não depois do auxiliar
was/were + verb -ing - past continuous
1. I am watering the plants in the morning
2. What were you doing at 6 o'clock yesterday evening?
3. They were waiting for the bus when the accident happened.
4. The boys are playing in the garden.
5. It is raining cats and dogs.
6. I am revising my lessons now.
7. Somebody was knocking at the door
8. We are waiting for the guests to turn up.
9. The students were shouting slogans outside the campus.
10. The birds are flying in the sky.
Hope I was of some help. Best, tutor Miguel Augusto Ribeiro.
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