1. Nina celebrated her birthday yesterday. Her room looked beautiful, there were many flowers in it. When I came in, somebody was playing the piano, two or three pairs were dancing.2. Look at these children! They are skating very well.3. — Will you skate tomorrow? — Yes, I will be skating from 3 till 5 in the afternoon. 4. He didn't come last Monday. Was he busy?5. When did you come yesterday?6. — Where were you yesterday? — I was at home. — I rang you up at two o'clock, but nobody answered.— Oh, I was in the garden, I was reading a book and didn't hear the telephone.7. She goes to school every day.
___________________Пояснения:1. Past Simple; Past Simple; Past Simple; Past Simple; Past Continuous; Past Continuous.2. Present Continuous.3. Future Simple; Future Continuous.4. Past Simple; Past Simple.5. Past Simple.6. Past Simple; Past Simple; Past Simple; Past Simple; Past Simple; Past Continuous; Past Simple.___________________Примечание:Indefinite и Simple — одно и то же.